Answer:
Is the new volume, 10.80L?
Explanation:
But if wrong just ignore honestly.
How many iron atoms are in 7.890 g of iron?
Answer:
mole = reactingmass = 7.890= 0.142 mol
molarmass 55.8
atoms = mol × alvagadro constant
0.142 × 6.02 × 10^23
=8.5484 × 10^22 Atoms
If a 100. -g sample of a hydrated compound contains 37.07-g sodium, 48.39-g carbonate and 14.54-g water, find the empirical formula
he required empirical formula based on the data provided is Na2CO3.H2O.
What is empirical formula?The term empirical formula refers to the formula of a compound which shows the ratio of each specie present.
We have the following;
Mass of sodium = 37.07-g
Mass of carbonate = 48.39 g
Mass of water = 14.54-g
Number of moles of sodium = 37.07-g/23 g/mol = 2 moles
Number of moles of carbonate = 48.39 g/61 g/mol = 1 mole
Number of moles of water = 14.54/18 g/mol = 1 mole
The mole ratio is 2 : 1: 1
Hence, the required empirical formula is Na2CO3.H2O
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scientific notation mean
It is a full moon on Jan 15th. How many days will it be until the next full moon?
Answer:
29.5 days
Explanation:
How often does a full Moon occur? A full Moon happens roughly every 29.5 days. This is the length of time it takes for the Moon to go through one whole lunar phase cycle.
Which items below are properties of matter? [select all that apply]
solubility
length
taste
hardness
color
mass
density
weight
volume
boiling point
Answer:
Solubility, length, hardness, color, mass, density, weight, volume, boiling, and point.
Explanation: Hope this helps
There are 3 reactions of Calcium Carbonate, CaCO₃, that can be formed in this particular problem:
Reaction 1: Calculate the ΔH₁
Reaction 2: ΔH₂ = -635.1 kJ
Reaction 3: ΔH₃ = 178.3 kJ
ΔH₁ = ΔH₂ - ΔH₃
ΔH₁ = -635.1-(178.3) KJ
ΔH₁ = -813.4 KJ
Fill in the reaction type and predicted products for:
Fe3O4 (s) → ??
Type in the IUPAC name or formula for each product.
Write subscripts as normal numbers.
If there is no second product, type "nothing".
The reaction type is
Question Blank 1 of 3
.
The correct products are:
Question Blank 2 of 3
and
Question Blank 3 of 3
charged group of more than one type of element
a. Manatomic ion
b. Rpluction
c. Polyatomic ion
d. Oxidation
Answer:
C polyatomic ions are made up of more than one atoms. The correct options are,
Explanation:
Polyatomic ions have many charges.
Polyatomic ions attract other ions to form ionic bonds.
Polyatomic ions are made up of two or more types of atoms.
Polyatomic ion:
They are also known as a molecular ion, It is an ion composed of two or more covalently bonded atoms.
They have extra or lesser electrons than they need.
They are charged hence they attract opposite one.
For example-
Therefore, C polyatomic ions are made up of more than one atoms.
Answer:
C.
Explanation:
This would be correct because polyatomic ions exist in a group of more than one atom.
How would I Determine the number of moles in 3.51 x 10^23 formula units of CaCl2
Answer:
by using this formula you will get it
Explanation:
number of mole = number of particles÷ Avogadro's number
n=3.51×10^23÷ 6.02×10^23
n = 0.58 moles
Which chemicals are only present at point “x”?
PLEASE ANSWER!!! 50 POINTS TO WHOEVER DOES
Lab Report
Organisms and Populations
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U1_ Lab_OrganismsAndPopulations_Alice_Jones.docx).
Introduction
1. What was the purpose of the experiment?
Type your answer here:
2. What limits the growth of populations?
Type your answer here:
3. Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
1. What tools did you use to collect your data?
Type your answer here:
2. Describe the procedure that you followed to conduct your experiment.
Type your answer here:
Data and Observations
1. Record your observations.
Type your answer here:
Conclusions
1. What conclusions can you draw about how resource availability affects populations of organisms in an ecosystem? Write an evidence-based claim.
Type your answer here:
2. Write a testable question that could be used to further investigate the topic of resources and populations of organisms.
Type your answer here:
Answer:
1. The purpose of an experiment is to test out your hypothesis. If your hypothesis is correct, then it is a theory that could work every single time the experiment has been performed by scientists.
2. Limiting factors include a low food supply and lack of space. Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off. The carrying capacity (K) is the maximum population size that can be supported in a particular area without destroying the habitat.
3. An example of a hypothesis based on observation and scientific principles is:
Deaf children whose parents are deaf will acquire language faster than deaf children whose parents are not deaf.
A hypothesis is an informed prediction or a tentative statement about what you think that would occur in a scientific experiment as a result of experience from observations accepted by scientific rules and law.
A hypothesis is a testable statement obtained from the research question but questions cannot be tested directly, it is the proposed relationship between the variables that are tested.
An example of a hypothesis is:
Deaf children whose parents are deaf will acquire language faster than deaf children whose parents are not deaf.
This specifies the direction of the hypothesis because one group is faster than the other.
4. In any ecosystem, organisms and populations with similar requirements for food, water, oxygen or other resources may compete with each other for limited resources, access to which consequently constrains their growth and reproduction. Growth of organisms and population increased are limited by access to resources.
The purpose of an experiment is to test out your hypothesis. If your hypothesis is correct, then it is a theory that could work every single time the experiment has been performed by scientists.Other part of the question is discussed below:
What is limiting factor?Limiting factors include a low food supply and lack of space. Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off. The carrying capacity (K) is the maximum population size that can be supported in a particular area without destroying the habitat.
An example of a hypothesis based on observation and scientific principles is that a Deaf children whose parents are deaf will acquire language faster than deaf children whose parents are not deaf.
A hypothesis is an informed prediction or a tentative statement about what you think that would occur in a scientific experiment as a result of experience from observations accepted by scientific rules and law.
Therefore, The purpose of an experiment is to test out your hypothesis. If your hypothesis is correct, then it is a theory that could work every single time the experiment has been performed by scientists.
Learn more about experiment on:
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#SPJ2
What is the mass of 750 atoms of Nitrogen?
Answer:
53.545803079954496
Explanation:
Brainliest pls
can you please help me out with this
Answer:
Explanation:uum i cant see anything but yeah I think its c
help ASAP 100 POINTS AND BRAINLEST IF CORRECT! Classification Activity Worksheet
Instructions: Read each myth (untruth). Reword it to make a factual statement. Then, give two to three reasons why the myth is untrue. Use complete sentences and support your answer with evidence, using your own words.
For example:
Myth: A dead organism is the same as a nonliving thing in science.
Fact: A dead organism is not the same as a nonliving thing in science.
Evidence: (You can find evidence in Lesson 5.03. Explain why this evidence supports the fact statement.)
Myth: A dead organism is the same as a nonliving thing in science.
Fact:
Evidence:
Myth: The Linnaeus system of classification will always stay the same.
Fact:
Evidence:
Myth: Tigers and goldfish are not related.
Fact:
Evidence:
Myth: An organism's kingdom only describes physical characteristics.
Fact:
Evidence:
Myth: Mammals and plants don't belong in the same domain.
Fact:
Evidence:
Your Turn
Come up with another myth about the classification of organisms. Then, give two to three reasons why the myth is untrue. Use complete sentences and support your answer with evidence, using your own words.
Your myth:
Fact:
Evidence:
As per questions,
• Myth: A dead organism is the same as a non-living thing in science.
Fact: A dead organism is not the same as a non-living thing in science.
Evidence: A dead organism means that it was once alive, whereas a non-living thing has never been alive.
• Myth: The Linnaeus system of classification will always stay the same.
Fact: The Linnaeus system of classification will pass on .
Evidence: Its new species are being found. Also, Carl Linnaeus came up with a sequential classification of living organism under different taxons namely Kingdom, phylum, class, order, family, genus and species.
• Myth: Tigers and goldfish are not related.
Fact: Tigers and goldfish are related
Evidence: They fall into the same category of vertebrates, which means that both creatures have spines, and internal bone structure.
• Myth: An organism's kingdom only describes physical characteristics.
Fact: An organism's kingdom not only describes physical characteristics.
Evidence: This is evident by that both plant and animal kingdom are classified on the basis of photosynthetic ability. Besides physical characteristics, it also describes its mode of nutrition and food characteristics.
• Myth: Mammals and plants don't belong in the same domain.
Fact: Mammals and plants belong in the same domain.
Evidence: Plants have cells, nucleus, breathing and respiratory capabilities just like mammals.
---------------------★------------------
Your myth: Animals are not related to humans.
Fact: Animals are indirectly related to humans.
Evidence: Humans possessess some unique features found in other species, hence, we are related to apes. At the known time, chimpanzees is our closest relative, and we share up to 98% of the DNA sequence with them.
Calculate the mass of aluminium oxide which contains double the number of oxygen atoms in 192 g of oxygen gas.
Answer:
648
Explanation:
what you're going to do your first is to convert the 192g to number of atoms
firstly you are going to convert 192 to moles using the formula reacting mass all over molar mass, into it that you're going to get 12 as your answer, you Dey multiply the 12 to avocados constant
in doing that you have I've gotten the number of atoms present in 192 g of oxygen
What is the mass in grams of 3.01 X 1023 atoms of the element chlorine, Cl? (Please show step by step)!
Answer: the mass of 3.01 atoms of chlorine is 35.46/2 = 17.73 g.
Explanation: hope its correct
step by step: molar mass: (2 x 35.46) g/mol = 70.92 g/mol
1 mole chlorine = 6.02 x 10^23 molecules of chlorine.
Mass of 6.02 x 10^23 molecules chlorine = 70.92 g
Mass of 3.01 x 10^23 molecules chlorine = 70.92 x(3.01 x 10^23)/(6.02 x 10^23)g
= 35.46 g
what is the conversion factor for in^3 to cm^3
It took Lily 7 seconds to ride her bike 35 m to the end of the block what was her speed
Answer:
5
35 divided by 7 = 5
Explanation:
Hope this helps!!
Liyah
Add the phrase that completes the thought in the underline sentence. Lin never forget how it felt.
Lin never forgot how it felt to be left out
Answer:
to be left out
Explanation:
Lin never forgot how it felt to be left out.
In the paragraph given, we see Lin being left out of a play. She wanted to be Dorthy but was told she couldn't. This led to feelings of being left out.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
A radioactive isotope that can be followed through a chemical reaction or industrial process is called a/an what? (needs answer asap!!!!!)
Fill in the reaction type and predicted products for:
H2SO3 (aq) + Mg(OH)2 (aq) → ??
Type in the IUPAC name or formula for each product.
Write subscripts as normal numbers.
If there is no second product, type "nothing".
The reaction type is
Question Blank 1 of 3
.
The correct products are:
Question Blank 2 of 3
and
Question Blank 3 of 3
What is the relationship between temperature and kinetic energy?
Answer:
substance is related to the average kinetic energy of the particles of that substance
Explanation:
Answer:
As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.
Explanation:
hope it will help you have a great day bye and Mark brainlist if the answer is correct
[tex]kai6417[/tex]
#carry on learning
ONE MINUTE PLSSSS!!! WILL GIVE BRAINLIEST
Carbon has an atomic number of 6 and an atomic mass of 12. If it is a neutral atom then it has 6 protons, ______ neutrons, and _____ electrons.
13 neutrons and 6 electrons
6 neutrons and 6 electrons
7 neutrons and 7 electrons
12 neutrons and 12 electrons
100 POINTS!!!!!!! <3
Answer:
6 neutrons and 6 electrons
Explanation:
I got it right ;) good luck
In the reaction A+B - C+D, if element B is in excess, then-
Answer:
Explanation:
Determining the Limiting Reagent
One reactant (A) is chosen, and the balanced chemical equation is used to determine the amount of the other reactant (B) necessary to react with A. If the amount of B actually present exceeds the amount required, then B is in excess, and A is the limiting reagent.
An atom has atomic number 5 and mass number 11. How many neutrons does the atom have?
A- 5
B- 6
C- 10
D- 11
Answer:
B
Explanation:
neutrons + atomic number/proton/electron for a neutral atom = mass number
e.g
mass number of Chlorine 35.5
proton number 17
neutron number will be 35.5-17 = 18.5
Therefore.....
your question deduced says
atomic number is 5
mass number is 11
neutron number is however mass number minus atomic number 11-5 =6
i’m trying to figure out how to convert 6 moles KCL to particles.
Answer:
How many moles KCl in 1 grams? The answer is 0.013413582325
1 mole is equal to 1 moles KCl, or 74.5513 grams.
447.3078 is the answer
Explanation:
~Cornasha_Weeb
J. A gas has a volume of 12 L at 200°C with 6.0 atm.
If volume remains constant, what pressure will the gas
have at 50°C?
Gay Lussac's Law
[tex]\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]
Convert:
200°C = 200 + 273 = 473 K
50°C = 50 + 273 = 323 K
Input the value:
[tex]\tt \dfrac{6}{473}=\dfrac{P_2}{323}\\\\P_2=4.097~atm[/tex]
Answer:
[tex]0.4 \: [/tex]
Explanation:
I only know this answer hope it will help you if it's wrong I am sorry:(
[tex]kai6417[/tex]
How many miles of mgs2o3 are in 199g
Answer:
1.83 moles
Explanation:
1.83 moles
2.50 grams F2= _____ grams of F2
Answer:
i think maybe 94.99201599999999
Explanation:
Given that for Fe2O3 (s) the standard enthalpy of formation is −824.2 kJ/mol and the enthalpy of reaction is −851.5 kJ/mol, what is the enthalpy of formation for Al2O3 (s)?
This problem is providing us with the enthalpy of formation of Fe2O3 (s) and the enthalpy of reaction when it reacts with Al to form Al2O3 (s) and Fe. Thus, the enthalpy of formation of Al2O3 (s) is required and found to be -1675.7 kJ/mol as follows.
Enthalpy of reaction.In chemistry, the heat involved in a chemical process can be quantified via the difference in the overall enthalpy of products minus that of reactants:
[tex]\Delta H_r=\Delta H_{products}-\Delta H_{reactants}[/tex]
Now, with the given reaction:
[tex]Fe_2O_3 (s) + 2 Al (s) \rightarrow 2 Fe (s) + Al_2O_3 (s)[/tex]
One can see both Al and Fe have zero as their enthalpies of formation for they are elements. In such a way, one can rearrange the previous formula as:
[tex]\Delta H_r=\Delta H_{Al_2O_3}-\Delta H_{Fe_2O_3}[/tex]
And hence plug in the given energies in order to find the required:
[tex]-851.5kJ/mol=\Delta H_{Al_2O_3}-(-824.2kJ/mol)\\\\\Delta H_{Al_2O_3}=-851.5kJ/mol+(-824.2kJ/mol)\\\\\Delta H_{Al_2O_3}=-1675.7kJ/mol[/tex]
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