The three step for the synthesis of 3-bromocyclopentene are: bromination, reaction with tert-butoxide and at last reaction with ester.
What is 3- bromocyclopentane and how it is prepared in three steps?The first step for the preparation of 3-bromocyclopentane would be bromination : cyclopentane + Br2/hv ----------- bromocyclopentane.The second step would be reaction with potassium tert-butoxide which is obviously a base : bromocyclopentane + (CH3)3CO K+ ----------------------cyclopentene.The third step would be the reaction of cyclopentene with NBS and ROOR to give 3- bromocyclopentene.In organic chemistry we face a lot of organic compounds , some are alkanes, alkenes and alkynes out of which 3-bromocyclopentene is a synthetic compound.To know more about 3-bromocyclopentene visit:
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Some solar power plants use mirrors to focus sunlight on a central collector. The energy from sunlight causes water in the central collector to boil and produce steam. A generator uses the kinetic energy of the steam to produce electricity. How could a molten salt battery help this type of power plant generate electricity 24 hours per day?
Answer:
concentrated solar energy
Explanation:
Solar thermal power systems use concentrated solar energy
All solar thermal power systems have solar energy collectors with two main components: reflectors (mirrors) that capture and focus sunlight onto a receiver.
5. If you were making a metal pot for cooking, would you want a metal that transferred heat efficiently
or a metal that did not transfer heat efficiently?
Answer:
You would want a metal that transfered heat efficiently.
Explanation:
We use metal frying pans to cook our food because they conduct heat. They are conductors of heat, if it was not so, they could not be used for cooking food.
Hope this helps! :)
Which of the following is the best balance to maintain low levels of carbon dioxide in the atmosphere?
a small volume of plants with a small number of carbon sources
a small volume of plants with a large number of carbon sources
a large volume of plants with a small number of carbon sources
a large volume of plants with a large number of carbon sources
Answer: a large number of plants with a small number of carbon sources.
Explanation: the Formula for photosynthesis is
6CO2 + 6H2O → C6H12O6 + 6O2
So to use the carbon dioxide from the atmosphere to produce sugar and oxygen the more the atmosphere CO2 is available rather than other sources of carbon would allow plants to fully utilize the CO2 in the atmosphere.
a large number of plants would use more CO2 than a small number of plants.
how many significant digits are in 38 students
Answer: 2
Explanation: Every non-zero digit is a significant digit.
Answer:
2 significant figures.
Explanation:
38 contains 2 significant figures.
HELP QUICK PLEASE
The table shows the number of charged particles in an ion.
Charged Particles
Charge on Particle Number of Particles
Positive
Negative
3
2
A negatively charged substance is brought near the ion. What will most likely happen and why?
O a
Ob
Oc
Od
The ion will repel the substance because the ion has more electrons than protons.
The ion will repel the substance because the ion has more protons than electrons.
The ion will attract the substance because the ion has more electrons than protons.
The ion will attract the substance because the ion has more protons than electrons.
Going by the remnant charge, if a negatively charged substance is brought near the ion, an attraction will take place. The ion will attract the substance because the ion has more protons than electrons.
Attraction and repulsion of ionsAccording to established law, substances with like charges repel one another while those with unlike charges tend to attract.
Considering the ion in question, there are 3 positive and 2 negative charges. This means that the ion has one remnant positive charge. In other words, the ion has more protons than electrons.
If a substance that is negatively charged is brought near the ion, an attraction will take place. This is because both the ion and the substance have unlike charges.
In summary, there will be an attraction between the ion and the substance because the ion has more protons (positive charges) than electrons (negative charges).
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Answer:
The ion will repel the substance because the ion has more protons than electrons.
Explanation:
Because the ion has more protons than electrons the ion will repel the substance :)
14. The element chlorine occurs in nature as a mixture of two iso-
topes. Chlorine-35 has an atomic mass of 34.969 amu and
makes up 75.77% of chlorine atoms. Chlorine-37 atoms make
up the remaining 24.23% of all chlorine. Use the average
atomic mass of chlorine from the periodic table to calculate the
atomic mass of Cl-37 atoms.
Chemical element chlorine has the atomic number 17 and the symbol Cl. The second-lightest halogen, fluorine is situated between bromine and fluorine in the periodic table and has most of its features in the middle of those two elements. Chlorine is an odorless, yellow-green gas at room temperature.
Chlorine is found in nature in the ratios of 75.53% and 24.47% as the isotopes "CI35" (atomic mass = 34.969 amu) and "CI37" (atomic mass = 36.966 amu). The atomic masses of the two chlorine isotopes are 35 u and 37 u.
The two chlorine isotopes, 35Cl and 37Cl, have a respective ratio of 3:1.
Cl-37 atoms has a total of 37 nucleons—17 protons and 20 neutrons—make up its nucleus. Natural chlorine is composed of chlorine-37, which makes up 24.23%, and chlorine-35, which makes up 75.77%. This gives chlorine atoms in bulk an apparent atomic weight of 35.453(2) g/mol.
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1
Students completed a flame test lab and recorded their results in the data table
below.
Compound
Potassium chloride
Sodium chloride
Lithium chloride
Calcium chloride
Unknown
Color
Lavender
Yellow-orange
Red
Orange
Red
Which of the following choices best explains why the students were able to identify
the unknown as lithium chloride?
The student observed the solution before it wind put into the flame and realized it was similar in texture and colour to, the lithium chloride the teacher showed them. When they saw that both lithium chloride and the unknown produced a red flame, they were sure that the unknown must have been lithium chloride as well
What is chemical compound?A compound refers to a substance consisting of identical molecules composed of atoms of two or more chemical elements. That is called a chemical compound. A chemical compound means a chemical substance consisting of several similar molecules containing elements of several elements.
Most notably, these molecules are linked by chemical bonds. A chemical formula expresses the number of atoms of each element in a molecule of a compound. In addition, this chemical formula uses standard abbreviations for chemical elements with numerical signatures.
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a bomb calorimetry measurement indicates that a single potato chip has a heat content os 20,000j. what is on the label of a bag of potato chips that contains 20 chips?
The label of a bag of potato chips that contains 20 chips using calorimetry will be 400,000J.
What is calorimetry?Calorimetry is the science of measuring the heat absorbed or evolved during the course of a chemical reaction or change of state.
A bomb calorimeter is a type of constant-volume calorimeter in which material is burned to measure its heat content.
According to this question, a bomb calorimetry measurement indicates that a single potato chip has a heat content of 20,000J. This amount is specifically for only one chip, hence, the amount of multiple chips can easily be calculated as follows:
Heat energy of 20 chips = 20,000J × 20 chips
Heat energy of 20 chips = 400,000J
Therefore, 400,000J of energy will be on the label bag.
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ammonia reacts with oxygen according to the following equation. 4 nh3(g) 5 o2(g) equilibrium reaction arrow 4 no(g) 6 h2o(g) the enthalpy of reaction for this reaction is negative. identify two changes that could be made to the system to shift the equilibrium toward the products and two changes that could be made to shift the equilibrium toward the reactants. (select all that apply.) changes that would shift the equilibrium toward the products: increasing the volume of the system increasing the concentration of no or h2o decreasing the concentration of nh3 or o2 reducing the temperature of the system changes that would shift the equilibrium toward the reactants: increasing the volume of the system increasing the concentration of no or h2o decreasing the concentration of nh3 or o2 reducing the temperature of the system
Based on the number of particles involved and the enthalpy of the reaction, changes that would shift the equilibrium to the right would, according to Le Chatelier's principle, include increasing the volume of the system, reducing the pressure of the system, reducing the temperature of the system, increasing the concentration of ammonia and/or oxygen and reducing the concentration of NO and/or water. Changes in the opposite direction would cause the equilibrium to shift towards the reactants.
Upon increasing pressure or reducing volume, the equilibrium shifts in the direction that produces fewer gaseous particles. In this case, that's the reactants (9 molecules) and not the products (10 molecules). When considering temperature, it is useful to consider heat as one of the reaction components. When the enthalpy of the reaction is negative, heat is produced so it can be considered to be one of the products. Le Chatelier's principle states that upon changing one of the variables, the equilibrium will shift in the direction that counteracts the effects of the change. So, when reducing the temperature of the system, we are taking the heat out of the system, so equilibrium will shift to the products so that it can produce more heat, and vice versa. The same principle applies to the concentrations of ammonia, oxygen, water, and NO.
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fill in the missing information: symbol atom or ion? check all that apply number of protons number of electrons sr neutral atom cation anion neutral atom cation anion 35 36 si neutral atom cation anion
1) This is an Anion
2) This is a Cation
3) It is Neutral.
Atom: A chemical element is uniquely defined by its atoms, which are tiny pieces of substance. An atom is made up of a core nucleus and one or more negatively charged electrons that orbit it. The positively charged, comparatively hefty protons and neutrons that make up the nucleus may be present.
1) number of protons = 7
So, the atomic number = 7
N has an atomic number of 7.
charge = number of proton - number of electrons
= 7 - 10
= -3
So, this is an anion
symbol: N3-
atoms or ion: anion
number of protons = 7
number of electrons = 10
2) charge = +3
Pd has an atomic number of 46.
number of protons = 46
charge = number of proton - number of electrons
+3 = 46 - number of electron
number of electron = 43
since the charge is positive it is a cation
symbol: Pd3+
atoms or ion: cation
number of protons = 46
number of electrons = 43
3) number of protons is 28
So, the atomic number is 28
Ni has an atomic number of 28.
since it is neutral,
number of electron = number of proton = 28
symbol: Ni
atoms or ion: neutral atom
number of protons = 28
number of electrons = 28
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A different mass of sodium hydroxide was used to make another 25.0 cm' solution.
35.0 cm' of 0.250 mol/dm' hydrochloric acid was required to neutralise this solution.
Calculate the mass of sodium hydroxide in the 25.0 cm' solution that was used in the titration.
Relative formula mass (M) of NaOH = 40
Mass=..
[4]
0.003 moles of NaOH was used in the titration.
What is titration?The concentration of an identified analyte can be found using a simple laboratory technique called titration. As a standard solution with a given concentration and volume, a reagent known as the titrant or titrator is created.
By using a solution with a known concentration to measure the concentration of an unknown solution, this process is known as titration. To a known volume of the analyte (the unknown solution), the titrant (the known solution) is typically added from a buret until the reaction is finished. To ascertain the unknown concentration of an identifiable analyte, titration, commonly referred to as titrimetry, is a widely used quantitative laboratory analytical technique (Medwick and Kirschner, 2010). Volume measurements are a crucial component of titration
Concentration in mol/dm3 =
Amount of solution mol
= concentration in mol/dm3 × volume in dm3
Amount of sodium hydroxide
= 0.100 × 0.0250
= 0.00250 mol
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94. Determine the number of moles of oxygen atoms in each sample. a. 4.88 mol H₂O₂ b. 2.15 mol N₂O c. 0.0237 mol H₂CO3 d. 24.1 mol CO₂
a)The 4.48 mol H₂O₂ contains 8.96 moles of oxygen atoms.
b)The 2.15 mol N₂O contains 2.15 moles of oxygen atoms.
c)The 0.0237 moles H₂CO₃ contains 0.0711 moles of oxygen atoms.
d)The 24.1 mol CO₂ contains 48.2 moles of oxygen atoms.
What is a mole ?A mole is 6.02214076 x 1023 of any chemical unit, comprising atoms, molecules, ions, and others. Due to the large number of atom, molecules, or other components that comprise any material, the mole is an useful unit to utilize.
Briefing:There are two moles of H and two moles of O in every mole of H₂O₂
There are two moles of N and one mole of O in every mole of N₂O
There are 2 moles of H, 1 mole of C, and 3 moles of O in a mole of H₂CO₃
1 moles of C and 2 moles of O are present for every mole of CO₂
Taking this into account:
The number of moles of oxygen atoms present in a 4.88 moles sample of H₂O₂ can be determined by:
[tex]\text { 4.48 molesof } \mathrm{H}_2 \mathrm{O}_2 x \frac{2 \text { moleso foxygen }}{1 \text { moleof } \mathrm{H}_2 \mathrm{O}_2}=[/tex]8.96 moles of oxygen atoms
The 4.48 mol H₂O₂ contains 8.96 moles of oxygen atoms.
The number of moles of oxygen atoms present in a 2.15 moles sample of N₂O can be determined by:
[tex]2.15 \text { molesof } N_2 O x \frac{1 \text { molesofoxygen }}{1 \text { moleof } N_2}=[/tex]2.15 moles of oxygen atoms
The 2.15 mol N₂O contains 2.15 moles of oxygen atoms.
The number of moles of oxygen atoms present in a 0.0237 moles sample of H₂CO₃ can be determined by:
[tex]0.0237 \text { molesof } \mathrm{H}_2 \mathrm{CO}_3 x \frac{3 \text { moleso foxygen }}{1 \text { moleof } \mathrm{H}_2 \mathrm{CO}_3}=[/tex]0.0711 moles of oxygen atoms
The 0.0237 moles H₂CO₃ contains 0.0711 moles of oxygen atoms.
The number of moles of oxygen atoms present in a 24.1 moles sample of CO₂ can be determined by:
[tex]24.1\text { molesofC } \mathrm{CO}_2 x \frac{2 \text { moleso foxygen }}{1 \text { moleof } \mathrm{CO}_2}[/tex]=48.2 moles of oxygen atoms
The 24.1 mol CO₂ contains 48.2 moles of oxygen atoms.
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• 1.0g of hydrogen reacts Completely with 19.0g of florine.
What is the percent by mass of hydrogen in the Compound
that is formed?
The percentage by mass of hydrogen in the Compound that is formed is found to be 5% if 1.0g of hydrogen reacts Completely with 19.0g of fluorine.
Mass PercentA component in a particular combination or a concentration can be described using the mass percent symbol. The mass of solute contained in a specific mass of solution is indicated by the mass percentage used to characterize the solution composition. The concentration of the solute is expressed in terms of mass or moles.
What does “% by mass” mean?As a mass percentage, an element's concentration in a compound or component of a combination can be represented. The mass percentage is calculated by multiplying the result by 100% after dividing the combined mass by the masses of each component. Also called Mass Percent or (w/w) Percent.
[tex]\frac{1}{2} H_{2} + \frac{1}{2} F_{2}[/tex] →[tex]HF[/tex]
Percentage by mass hydrogen
= (Mass of hydrogen) / (Mass of Hydrogen fluoride) x 100%
= [tex]\frac{1}{20}[/tex] x 100%
=5%
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How can the number of electrons be predicted in a neutral atom? _________________________________________________________________________ _________________________________________________________________________
The number of electrons can be predicted in a neutral atom because the number of protons and electrons in a neutral atom will be identical, we can readily calculate the electron number from the atomic number.
What can be used to predict the number of electrons?An atom's atomic number can be used to forecast its electrical structure. The atomic number can be used to forecast the total number of electrons because neutral atoms have an equal number of protons and electrons.
So, If you know what group the atom's element belongs to and the group number correlates to the number of electrons on the valence shell and you can determine how many atoms are on the atom's valence shell.
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Q23. Ammonium nitrate is an important fertiliser. It is made by reacting nitric acid with the alkali
ammonia.
State the type of reaction taking place.
Answer:
It is a neutralization reaction.
Explain the difference between an ionic and covalent bond: question 1 options: covalent bonding produces electron transfer causing the atoms to become ions (cations and anions). ionic bonding allows atoms to share electrons. covalent bonding allows atoms to share electrons. ionic bonding produces electron transfer causing the atoms to become ions (cations and anions). oppositely charged atoms form ions and are attracted to each other. this can be either an ionic or covalent bond.
The difference between covalent and ionic bonds is that covalent bonding allows atoms to share electrons, but ionic bonding cause electron transfer, leading the atoms to form ions (cations and anions), and these oppositely charged ions are attracted to each other.
Atoms combine to create compounds in order to complete their octet and to achieve stability. This can be done by combining with other atoms either by electron sharing or electron transfer from one atom to another. Therefore, covalent bonds are created when electrons are shared, whereas ionic bonds are created when electrons are transferred.
Ionic bonds are generally formed between metal and nonmetal atoms. Non-metallic atoms gain electrons to form a negatively charged ion, while metallic atoms lose electrons to form positively charged ions. An atom becomes a cation when one or more of its electrons are lost, while an atom forms an anion when one or more electrons are gained. Hence, an ionic bond is formed as a result of the electrostatic attraction between oppositely charged ions.
A covalent bond, on the other hand, is formed between non-metal atoms as a result of electron sharing.
Therefore, an ionic bond is an attraction between ions with opposite charges whereas a covalent bond is the sharing of electrons between atoms.
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a pure sample of a new chemical compound was analyzed and was found to have the following mass percentages: al 31.5 %; o 56.1 %; s 12.4 %. which of these could be the empirical formula of the compound?
Answer: supercalifragilisticexpialidocuos
Explanation:
HELP QUICK PLEASE
The table shows the number of charged particles in an ion.
A negatively charged substance is brought near the ion. What will most likely happen and why?
A: The ion will repel the substance because the ion has more electrons than protons.
B: The ion will repel the substance because the ion has more protons than electrons.
C: The ion will attract the substance because the ion has more electrons than protons.
D: The ion will attract the substance because the ion has more protons than electrons.
Answer:
The ion will repel the substance because it has more electrons than protons.
Explanation:
there are more electrons (negative) than protons (postitive)
given a solution of 0.01 m nacl and 0.01 m zncl2, which solution would you expect to have the lowest freezing point, or is the freezing point the same for both solutions? support your decision by showing some simple calculations.
According to the Van’t Hoff factor, 0.01M [tex]ZnCl_2[/tex] will have the lowest freezing point.
The difference between a substance's concentration as determined by its mass and the concentration of particles that are actually formed when it dissolves is known as the Van 't Hoff factor, or i.
The quantity of ions that are produced during the dissolution of an ionic substance is the ideal Van 't Hoff factor.
According to Van’t Hoff factor, i, NaCl = 2
Therefore, 2 x 0.01 = 0.02M
According to Van’t Hoff factor, i, [tex]ZnCl_2[/tex] = 3
Therefore, 3 x 0.01 = 0.03M
ΔT = i x m x Kf
Higher the concentration of the particles, the lower the freezing point will be.
Therefore, 0.01M [tex]ZnCl_2[/tex] will have the lowest freezing point among the two solutions.
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Determine the mass of water produced from 50g of hydrocloric acid and excess potassium hydroxide HCl+KOH—>H2O+KCl
The mass of water produced from 50 g of hydrochloric acid and excess potassium hydroxide is determined to be 24.7 grams.
The balanced chemical reaction of equation is :
HCl + KOH → H₂O + KCl
First we will convert the mass of HCl from grams to moles,
Molar mass of HCl = 1.008 g/mol + 35.45 g/mol
Molar mass of HCl = 36.45 g/mol
Then, we will convert the mass of H₂O from grams to moles,
Molar mass of H₂O = 2 x (1.008 g/mol) + 16.00 g/mol
Molar mass of H₂O = 18.01 g/mol
Now, we will calculate the moles of HCl
Moles of HCl = Given mass
Molar mass
Moles of HCl = 50 g = 1.37 mol
36.45 g
We know that,
1 mole of HCl is required to produce 1 mole of water
Then, 1.37 mole of HCl forms 1.37 mole x 18.01 g = 24.7 grams
1 mole
Hence,
The mass of water produced is 24.7 grams.
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Can someone describe what is the role of hemoglobin?
PLSS HELP I NEED THIS ASAP!
The correctly identified subatomic particle with its charge is
Proton - Positive, Neutron -Neutral, Electron - Negative What is a neutron ?The British physicist James Chadwick made the neutron discovery in 1932.
Neutrons are neutral subatomic particles that are a part of every atomic nucleus, except the exception of regular hydrogen. Its rest mass of 1.67927980 10-27 Kg is slightly larger than a proton but 1838.68 times greater than an electron. It has no electricity charge. The dense inner core of the atom is where protons and neutrons, collectively referred to as nucleons, are linked together and account for 99.9% of the mass of the atom.
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write balanced equations for each of the following by insert- ing the correct coefficients in the blanks: (a) cu(no3)2(aq) koh(aq) ⟶ cu(oh)2(s) kno3(aq) (b) bc13(g) h2o(l) ⟶ h3(bo3(s) hc1(g) (c) casio3(s) hf(g) ⟶ sif4(g) caf2(s) h2o(l) (d) (cn)2(g) h2o(l) ⟶ h2c2o4(aq) nh3(g
The balanced reaction equations are given below. They are all examples of double displacement.
a) balanced reaction equation of the reaction between aqueous copper(II) nitrate and aqueous potassium hydroxide, resulting in the formation of solid copper(II) hydroxide and aqueous potassium nitrate
[tex]Cu(NO_{3} )_{2}(aq)+2KOH(aq)[/tex] → [tex]Cu(OH)_{2} (s) + 2KNO_{3}(aq)[/tex]
b) balanced reaction equation of the double displacement between gaseous boron cyanide and liquid water resulting in the formation of solid boric acid and gaseous hydrogen cyanide
[tex]2B(CN)_{3} (g) + 6H_{2} O[/tex] → [tex]2H_{3} BO_{3} (s)+6HCN(g)[/tex]
c) balanced reaction equation between solid calcium silicate and gaseous hydrogen fluoride resulting in the formation of gaseous silicon fluoride, solid calcium fluoride and liquid water
[tex]CaSiO_{3}(s) + 6HF (g)[/tex] → [tex]SiF_{4}(g)+CaF_{2}(s)+3H_{2}O(l)[/tex]
d) balanced reaction equation between cyanogen gas and liquid water resulting in formation of aqueous oxalic acid and gaseous ammonia
[tex](CN)_{2}(g) + 4H_{2} O (l)[/tex] → [tex]H_{2} C_{2} O_{4} (aq) +2NH_{3} (g)[/tex]
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Household bleach is approximately a 0.850 m solution of sodium hypochlorite (naocl). how many grams of naocl are present in a cup (~250. ml) of bleach?
There's approximately 15.8 g of NaOCl in a cup of bleach. To calculate this we need to use the molarity of the bleach solution and the molar mass of sodium hypochlorite.
In order to convert the molarity to mass, we need the molar mass of sodium hypochlorite. We can calculate it by adding up the relative atomic masses of sodium (23), oxygen (16), and chlorine (35.5):
M (NaOCl) = (23 + 16 + 35.5) g/mol = 74.5 g/mol
Now we calculate the amount (in moles) of sodium hypochlorite present in 250 mL (0.25 L) of bleach:
c = n/V ⇒ n = c*V = 0.850 M * 0.250 L = 0.2125 mol of NaOCl
Using the molar mass, we can now calculate the mass required:
n = m/M ⇒ m = n*M = 0.2125 mol * 74.5 g/mol = 15.8 g of NaOCl
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Plss answer and I will give the brainliest.
If a typical aluminum beverage can weighs 13.5 grams, how much alum could you produce for every 210 cans collected. Show your work, based on your own experiment.
The following is what I got from my experiment.
- mass of aluminum can: 0.4996 grams
- mass of alum produced:- 5.183 grams
Molar mass of aluminum: 26.98 grams
The alum produced during experiment for every 210 can is 38.21 kg
What is experiment?Experiment can be defined as a technique used to establish or refute a hypothesis, or to determine the efficacy or likelihood of anything new.
It can also be defined as a series of acts and observations carried out in the context of attempting to solve a specific problem or question.
According to your experiment 0.4996 gram of aluminum will produce 5.183 grams of alum.
Mass of 1 aluminum can = 13.5 g
Mass of 210 can = 13.5 x 210 = 2835g
Mass of alum produced by one gram of aluminum = 13.48 g
Mass of alum produced by 2835 g = 13.48 x 2835
= 38.21 kg
The amount of alum produced by 210 can = 38.21 kg
Thus, the alum produced during experiment for every 210 can is 38.21 kg
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Can someone tell me if this is correct please
No links please
Answer:
21.107
Explanation:
because this answer gives you 10 and also 90
how do u do this? I keep getting diff answers with every method I try
The masses of each of the substances after the reaction is;
Iron III oxide = 160 gCarbon monoxide = 0 gIron = 560 gcarbon dioxide = 660 gWhat is the limiting reactant?Let us recall that the limiting reactant is the reactant that is present in the least amount that is possible. This implies that once the limiting reactant is exhausted, then the reaction would have to come to a stop.
Now;
Number of moles of iron III oxide = 960 g/160 g/mol = 6 moles
Number of moles of CO = 420 g/28 g/mol = 15 moles
Now;
1 mole of iron III oxide reacts with 3 moles of CO
x moles of iron III oxide reacts with 15 moles of CO
x = 1 mole * 15 moles / 3 moles
= 5 moles
Hence iron III oxide is the excess reactant
It the follows that;
Mass of iron;
If 3 moles of CO produced 2 moles of Fe
15 moles of Co would produce 15 moles * 2 moles /3 moles = 10 moles
Mass of Fe = 10 moles * 56 g/mol = 560 g
Mass of carbon dioxide
3 moles of CO produced 3 moles of carbon dioxide
Mass of carbo dioxide = 15 moles * 44 g/mol = 660 g
Mass of iron III oxide left over;
1 mole * 160 g/mol = 160 g
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Student Exploration: Determining Density via Water Displacement
Directions: Follow the instructions to go through the simulation. Respond to the questions and
prompts in the orange boxes.
Vocabulary: Archimedes' principle, density, displacement, mass, volume
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
A ship floats by an iceberg as shown.
1. Based on the picture, which object is denser, the
iceberg or the ship?
2. How do you know?
1. Iceberg
2. The iceberg is more underwater than the ship.
Thanks to radar technology better crew training and iceberg monitoring systems, ship collisions with icebergs are generally avoidable, but when a collision does occur, the consequences can be devastating. These things are very rare. One of the rare but high-impact risks. The Titanic was neither the first nor the last ship to hit an iceberg and sink.
Here are the ten most sunk ships in the world in terms of lives lost due to iceberg accidents. A second study by British historian Tim Martin argued that atmospheric conditions on the night of the disaster may have caused a phenomenon called super refraction. This diffraction of light may have created a mirage or optical illusion that obscured the iceberg from the Titanic's vantage point.
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Complete and balance the following half-reaction in basic solution. be sure to include the proper phases for all species within the reaction so32- aq -> so42-(aq)
SO32-(aq) ==> SO42-(aq) ... unbalanced
SO32-(aq) + H2O ==> SO42-(aq) ... balanced for O
SO32-(aq) + H2O + 2OH- ==> SO42-(aq) + 2H2O ... balanced for O and H using base OH-
SO32-(aq) + H2O + 2OH- ==> SO42-(aq) + 2H2O + 2e- ... balanced for O, H and charge = balanced equation
What is half-reaction?
Half-reaction is the oxidation or the reduction reaction of a redox reaction. The oxidation is given as the loss of electrons, and reduction is given as the gain of electrons.
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this is math but they can't help you I understand here it's English if it's math help me with the procedure by putting the procedure
According to the solving the density of the marble is:
D = 2.5 g/cm^3
What is density?The amount of mass that a substance has per unit volume is known as its density. If two materials occupy the same volume, the one with a higher density would weigh more than the one with a lower density.
The formula for density:Utilizing the density formula is another approach to determining an object's weight-to-volume ratio. Since you only need to perform one operation to find it, the computation is not too difficult.
The density formula is as follows:
D = m / v,
where:
D - density;
m - mass; and
v - volume.
According to the give data:m - 5grams
v - 2cm
D -
Putting the value in the formula we get:
D = 5/ 2,
D = 2.5 g/cm^3
According to the solving the density of the marble is:
D = 2.5 g/cm^3
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