The independent variable is amount of water
It is a variable that stands alone and isn't changed by the other variables you are trying to measure called independent variable
Here given data is four bean seeds were placed in each of four pots. Each pot contained 100 cubic centimeters of soil All four pots were placed on the same sunny windowsill A different amount of water was placed in each pot then in the first pot 0ml of water are placed and in the second pot 10ml water are placed and in the third pot 20ml water are placed and in the fourth pot 40ml water are placed so, because of high concentration of water the seed germinate in fourth pot are fast other than three pot and all constant in all four pot are soil seed sunrays or container this all are same only amount of water are different and dependent variable is germination
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11. How many grams of nickel (ii) hydroxide will be produced if the following react completely?
2 KOH (aq) + NiCl2 (aq) → 2 KCI (aq) + Ni(OH)2 (S)
a. 30.4 mL of 0.673 M KOH
b. 17.6 mL of 0.841 M NiCl2
0.9541 grams of nickel (ii) hydroxide will be produced if 30.4 mL of 0.673 M KOH react completely and 1.3764 grams of nickel (ii) hydroxide will be produced if the 17.6 mL of 0.841 M NiCl₂ react completely.
According to the balanced chemical equation,
2KOH (aq) + NiCl₂ (aq) → 2 KCI (aq) + Ni(OH)₂ (S)
a. 2 Moles of KOH = one mole of Ni(OH).
As we know,
Molarity = moles/amount of solution(in liters)
For KOH,
0.675 = moles/0.0304
Moles of KOH = 0.02052.
Moles of Ni(OH) = 0.02052/2
Moles of Ni(OH) = 0.01026
We also know,
Moles = formed mass/molar mass
Molar mass of NiOH = 93 grams/mole
0.01026 = formed mass/93
Formed mass of NiOH = 0.9541 grams.
b. 1 Mole of NiCl₂ = one mole of Ni(OH).
As we know,
Molarity = moles/amount of solution(in liters)
For NiCl₂,
0.841 = moles/0.0176
Moles of NiCl₂ = 0.01480
Moles of Ni(OH) = 0.01480
We also know,
Moles = formed mass/molar mass
Molar mass of NiOH = 93 grams/mole
0.01480 = formed mass/93
Formed mass of NiOH = 1.3764 grams.
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PLEASE ANSWER THIS! i need help w/both asap
If the half life of radium-226 is 1,600 years, how long will it take for 93.75% of a sample of radium-226 to decay?
Sodium-24 has a half life of 15 days. What fraction of the original amount of sodium-24 will remain in a sample after 105 days?
Based on the half-lives of the given materials:
Number of years it take for 93.75% of a sample of radium-226 to decayis 6400 years.Fraction of Sodium-24 remaining after 105 days is 0.78 % .What is the half-life of a substance?The half-life of a substance is the time taken for half the amount present in the original sample of a substance to decay.
The half-life of a substance is constant.
Considering the given questions:
1. the half life of radium-226 is 1,600 years, how long will it take for 93.75% of a sample of radium-226 to decay?
The amount of remaining after 93.75% have decayed = 100 - 93.75 = 6.25%
The number of half-lives that will result in 6.25 % remaining will be:
After first half life = 50% remains
After second half life = 25% remains
After third half life = 12.5% remains
After fourth half life = 6.25% remains
Number of years taken = 4 * 1600
Number of years taken = 6400 years
2. Sodium-24 has a half life of 15 days. What fraction of the original amount of sodium-24 will remain in a sample after 105 days?
Number of half lives after 105 days = 105/15
Number of half lives after 105 days = 7 half lives
Fraction remaining = (¹/₂)⁷
Fraction remaining = 0.78 %
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i need help with chemistry equation
From the data provided and the equation of reaction:
The maximum amount in grams of ammonia (NH₃) gas that can be formed is 2.83 gramsThe formula of the limiting reagent is N₂.The amount of the excess reagent that remains after the reaction is complete is 3.67 grams.What is the maximum amount of the product that can be formed?The maximum amount of the product that can be formed is calculated from the equation of reaction as follows:
3H₂ (g) + N₂ (g) ---> NH₃ (g)From the equation of reaction, the mole ratio of hydrogen to nitrogen is 3 : 1
From the given data:
mass of hydrogen reacting = 4.65 grams
mass of nitrogen reacting = 4.67 grams
The moles of the reactants is determined as follows:
moles = mass/ molar massmolar mass of hydrogen gas = 2.0 g
molar mass of nitrogen gas = 28.0 g
Moles of hydrogen = 4.65/2 = 2.325 moles
Moles of nitrogen = 4.67/28 = 0.1667 moles
mole ratio of hydrogen to nitrogen is 2.325 : 0.1667 = 14 : 1
The limiting reagent is nitrogen while the excess reagent is hydrogen.
The formula of nitrogen is N₂.
Hence, the maximum moles of ammonia (NH₃ ) that can be formed is 0.1667 moles.
mass of ammonia formed = moles * molar massmass of ammonia formed = 0.1667 * 17 grams
mass of ammonia formed = 2.83 g
The moles of the excess reagent remaining after the reaction is complete = 2.335 - (0.1667 * 3) = 1.835
moles of the excess reagent remaining = 1.825 moles
mass = moles * molar massmass of the excess reagent remaining = 1.825 * 2
mass of the excess reagent remaining = 3.65 grams
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An object that weighs 10.045 g at room temperature may end up weighing _______ when it becomes very cold (select the correct answer): a) 9.085 g. b) 10.160 g. c) 20.045 g. Explain your answer
An object that weighs 10.045 g at room temperature may end up weighing 10.16g when it becomes very cold since the weight will increase slightly.
What is the effect of temperature on weight of substance?The relationship between density and temperature is inversely proportional. As the temperature of a substance decreases, the weight of the substance increases, vice versa.
During the process of decrease in temperature, the molecules of the object come together and becomes very dense, hence increase in the weight of the object.
As the temperature increases, the molecules of the object moves further apart becoming less dense, hence the decrease in the weight of the object.
Thus, an object that is initially at room temperature will weight more when the temperature decreases.
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What happens when a comet's orbit comes close to the Sun?
A. Its orbit speed up
B. Its orbit slows down
C. It begins to glow
D. It loses its tail
How many copper atoms are in 5.33mol CuCl2
The number of copper atoms are in 5.33mol CuCl2 =5.33 × 6.023 × 1023 = 3.21 × 1024
Copper AtomsThe chemical element copper has the atomic number 29 and the symbol Cu. It is an extremely high thermal and electrical conductivity metal that is soft, malleable, and ductile. Pure copper has a pinkish-orange tint when it is first exposed to the air. They all have 29 protons in their nuclei. However, they also contain neutrons, which are neutral particles. There are two different types of atoms in natural copper. One's nucleus contains 29 protons and 34 neutrons, whereas the other's contains 29 protons and 36 neutrons.Copper-63 (69.15 percent) and copper-65 (6.5 percent) are the two stable isotopes that make up natural copper (30.85 percent).
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For the following reaction:___Ca(NO3)2 + ____Li3PO4 --> ___LiNO3 + ____Ca3(PO4)2a) Determine the balanced equation b) What is the excess reagent for the following reaction given we have 3.4 moles of Ca(NO3)2 and 2.4 moles of Li3PO4?
The question requires us to balance a given reaction and then determine the excess reagent for this same reaction, given that 3.4 moles of Ca(NO3)2 and 2.4 moles of LiPO4 are used.
First, let's balance the equation so we can make the required calculations from it. A simple way to balance this reaction is to start with metals (Li and Ca) and consider the anions NO3 and PO4 instead of the isolated N, O and P atoms:
1) We write the given equation:
___Ca(NO3)2 + ____Li3PO4 --> ___LiNO3 + ____Ca3(PO4)2
2) We check the amount of Ca and Li on both sides of the reaction:
On the left side -> 1 Ca and 3 Li
On the right side -> 3 Ca and 1 Li
3) Then, we change the coefficients in order to have the same amount of Ca and Li on both sides:
3
4) Next, we check the amount of NO3 and PO4 anions:
Left side -> 3*2 NO3 = 6 NO3 and 1 PO4
Right side -> 3*1 NO3 = 3 and 2 PO4
4) We need to adjust some numbers in order to have the same amount of all considered species:
5) At last, we check again:
Left side -> 3 Ca, 6 NO3, 6 Li, 2 PO4
Right side -> 3 Ca, 6 NO3, 6 Li and 2 PO4
a) Then, the balanced reaction is:
1
b) Now that we know the stoichiometric coefficients, we can determine the excess reagent.
From the balanced reaction, we know that we need 3 moles of Ca(NO3)2 to react with 2 moles of Li3PO4. Then, we can write:
3 mol Ca(NO3)2 --------------- 2 mol Li3PO4
3.4 mol Ca(NO3)2 ------------ x
exexcesslimiting (more than 2.27 moles)
We can also determine the excess reactant from the following relation:
y ------------- 2.4 mol Li3PO4
In this case, solving for y, we have that we would need 3.6 moles of Ca(NO3)2 to react with 2.4 moles of Li3PO4, meaning that there is less than required of Ca(NO3)2, thus this is the limiting reactant while Li3PO4 is the excess reactant.
What mass of Ca(OH), is present in a sample if it is titrated to its equivalence point with 44.02 mL of 0.0885 M HNO3? The balanced chemical equation is as follows:
2HNO3+Ca(OH)2 ➠Ca(NO3)2+2H20
A mass of 0.141 g Ca(OH) is present in a sample if it is titrated to its equivalence point with 44.02 mL of HNO3.
What is titration and how the mass comes out to be 0.141 g?Given 44.02 mL of 0.0885 M HNO3 , when divided by 1000 will be equal to 0.0038 moles.Two moles required to neutralize one mole of calcium hydroxide.Dividing 0.0038 by 2 , since they are followed by two mole we get 0.0019. Finally when we come to calculate the hydroxide.Its mass equals 0.141g. Now titration is a familiar word we have read in the practicals of chemistry.Titration actually is a phenomena to figure out the amount of substance present in a liquid by figuring out the further amount of it needed for the reaction.To know more about titration visit:
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Calculate the theoretical yield in grams AlI₃ from the complete reaction of 113 grams I₂ according to the following balanced chemical equation: 2 Al(s) + 3 I₂(s) → 2 AlI₃(s)
The theoretical yield of All3 obtain from the reaction is 121g.
2Al + 3I₂ —> 2AlI₃
Molar mass of I₂ = 2 × 127 = 254 g/mol
Molar mass of I₂ from the equilibrium equation = 3 × 254 = 762 g
Molar mass of AlI₃ = 27 + (3 × 127) = 408 g/mol
Mass of AlI3 from the equilibrium equation = 2 × 408 = 816 g
762 g I₂
From the balanced formula above,
762 g I 2 is The reaction produced by 816 g of All3.
From the balanced equation above,
gives 762 g of I2, which reacts to form 816 g of AlI3 121g.
Convert grams to moles using molar ratios to crosslink products and reactants and convert moles back to grams. Calculated on a stoichiometric basis. Actual yield is determined experimentally. The yield rate is determined by calculating the ratio of actual yield/theoretical yield.
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What are the first and second net ionic equations for the addition of aqueous ammonia to aluminum nitrate?
the answer should include 2 separate NIEs
keep in mind that after adding aqueous ammonia to aluminum nitrate and seeing the suspended precipitate form, we then centrifuged the solution and the precipitate settled at the bottom of the tube.
Answer:
Explanation:
i dont kow
The complete ionic equation and the net ionic equation for the reaction of aqueous ammonia and aluminum nitrate is written as follows:
[tex]Al^{3+} (aq)+3(NO_{3})^{-}(aq)+3NH_{4}^{+} (aq) + OH^{-}(aq)\rightarrow Al(OH)_{3}(s)+3NH_{4}^{+}(aq)+NO_{3}^{-}(aq)[/tex]
[tex]Al^{3+}(aq)+ OH^{-}(aq)\rightarrow Al(OH)_{3}(s)[/tex]
What is ionic equation?In an ionic equation all the ions are charges are balanced to the proper stoichiometric ratio. The states of each species have to be written in the brackets.
The reaction of aluminum nitrate and aqueous ammonia is written as follows:
[tex]Al(NO_{3})_{3}(aq) + 3NH_{4}OH(aq)\rightarrow Al(OH)_{3}(s) +3NH_{4}NO_{3}(aq)[/tex]
The complete ionic equation is written below:
[tex]Al^{3+} (aq)+3(NO_{3})^{-}(aq)+3NH_{4}^{+} (aq) + OH^{-}(aq)\rightarrow Al(OH)_{3}(s)+3NH_{4}^{+}(aq)+NO_{3}^{-}(aq)[/tex]
From this complete ionic equation the net ionic equation can be written by cancelling same species from both side as below:
[tex]Al^{3+}(aq)+ OH^{-}(aq)\rightarrow Al(OH)_{3}(s)[/tex]
Therefore, the net product aluminum hydroxide is precipitated and the net ionic equation is written as above.
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how would you prepare the following aqueous solution. 365ml of 8.55*10^-2 M kh2po4 from solid kh2po4.
Answer:
Explanation:
6.78 kg
if you put 10 ml mercury 20 ml water and 30 ml kerosene in a container what will it look like
The substances would look as follows;
Kerosene at the topWater at the middleMercury at the lowest layerHow would it look like?Let us recall that just like solids, the density of the solids is important in the determination of how the mixture of the substances would appear. The substances that are denser would tend to appear below while the substances that are less dense would tend to appear above.
Let us remind ourselves the densities of each of the substances as a hep to where we are going;
Water - 1 g/cm³
Mercury - 5.43 g/cm³
Kerosene - 0.82 g/cm³
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4Fe(s) + 302(g) → 2Fe2O3(g)
In a certain reaction, 42.9 g of iron is reacted with 27.5 g of oxygen.
How many grams of iron(III) oxide are produced in the reaction?
Taking into account the reaction stoichiometry, if 42.9 g of iron is reacted with 27.5 g of oxygen, 61.335 grams of iron(III) oxide are produced.
Reaction stoichiometryIn first place, the balanced reaction is:
4 Fe + 3 O₂ → 2 Fe₂O₃
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Fe: 4 moles O₂: 3 molesFe₂O₃: 2 molesThe molar mass of the compounds is:
Fe: 55.85 g/moleO₂: 32 g/moleFe₂O₃: 159.7 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
Fe: 4 moles ×55.85 g/mole= 223.4 gramsO₂: 3 moles ×32 g/mole= 96 gramsFe₂O₃: 2 moles ×159.7 g/mole= 319.4 gramsLimiting reagentThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
Limiting reagent in this caseTo determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 96 grams of O₂ reacts with 223.4 grams of Fe, 27.5 grams of O₂ reacts with how much mass of Fe?
mass of Fe= (27.5 grams of O₂× 223.4 grams of Fe)÷ 96 grams of O₂
mass of Fe= 63.995 grams
But 63.995 grams of Fe are not available, 42.9 grams are available. Since you have less mass than you need to react with 27.5 grams of O₂, Fe will be the limiting reagent.
Mass of Fe₂O₃ formedConsidering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 223.4 grams of Fe form 319.4 grams of Fe₂O₃, 42.9 grams of Fe form how much mass of Fe₂O₃?
mass of Fe₂O₃= (42.9 grams of Fe×319.4 grams of Fe₂O₃)÷ 223.4 grams of Fe
mass of Fe₂O₃= 61.335 grams
Then, 61.335 grams of Fe₂O₃ are produced.
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Tricia is investigating a crime. Her supervisor tells her there isn’t enough physical evidence. How can Tricia BEST remedy this issue?
A.
She should talk to witnesses who observed the crime.
B.
She should look for small pieces of hair at the crime scene.
C.
She should use the security camera footage as evidence.
D.
She should include a photo array of suspects in her report.
Since Tricia is investigating a crime, the best form of remedy that Tricia can use to solve this issue is option A. She should talk to witnesses who observed the crime.
What does a witness look like?A witness is said to be a term that is defined as a person who has observed an occurrence or who testifies to what they have observed.
Note that a person who witnesses a robbery as well as testifies in court about what they observed is an example of a witness and they are the best people to get accurate information regarding the crime from.
Hence, option A is correct.
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Answer: A
Explanation:
plastics are created from processed petroleum which is pulled up from below the ground. this is important because
Plastic items are not biodegradable and contaminate the environment, petroleum is a non-renewable resource, and processing and consuming petroleum emits toxins into the environment.
What does the term "biodegradable" mean?We refer to a substance as being biodegradable if it can be naturally broken down by living things in an environment. Simply explained, the term "biodegradable" refers to a substance that gradually deteriorates into smaller parts like gases and sugar. Microorganisms, such as fungi and bacteria or microbes to be reabsorbed by the surrounding environment, ideally without generating any pollutants, are responsible again for biodegradation.
What is a example of biodegradable?Examples of biodegradable materials that microbes can break down include food and paper waste.
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what is the volume of a cube that has an edge length od 0.017m
The volume of the cube that has an edge length of 0.017m is 4.9 × 10-⁶m³.
How to calculate volume of a cube?Volume is a three-dimensional measure of space that comprises a length, a width and a height. It is measured in units of cubic centimeters in metric, cubic inches or cubic feet.
The volume can be calculated by multiplying the length, breadth and height of a three-dimensional shape such as cube.
According to this question, a cube has an edge length of 0.017m. The volume can be calculated as follows:
Volume = 0.017 × 0.017 × 0.017
Volume = 0.000004914
Volume = 4.9 × 10-⁶m³
Therefore, 4.9 × 10-⁶m³ is the volume of the cube
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What is the mass in grams of 23.4 moles of NaCl?
Answer:
1368.9 [gr].
Explanation:
1. the formula of the required mass is:
m=Mν, where M=[gr/mol] and ν=[moles];
2. M=M(NaCl)=M(Na)+M(Cl)=23+35.5=58.5 [gr/mol];
ν=23.4 [moles] according to the condition, then
3. the required mass:
m=23.4*58.5=1368.9 [gr].
Which of the following statements about atoms is NOT correct? Responses Atoms are electrically neutral when the number of protons are equal to the number of electrons All atoms of a given element must have the same number of protons, neutrons, and electrons Most of the volume of an atom contains only electrons Almost all of the mass of an atom is in the nucleus
According to the research, the correct answer is All atoms of a given element must have the same number of protons, neutrons, and electrons. It is the statement about atoms that is NOT correct.
What are atoms?It is a particle that consists of a central nucleus, positively charged with protons and neutrons, in which practically all the mass of the atom is concentrated.
In this sense, in the outer zone are the electrons, which occupy orbits, whose number varies according to the chemical element, also in a given element it can have a different number of neutrons.
Therefore, we can conclude that atoms are distinguished from each other thanks to the configuration of their particles, it is also true that all atoms of the same element are exactly the same, where the number of neutrons can vary.
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i need help with chemistry equation
The maximum amount of sulfur dioxide (SO₂) that can be formed is 25.6 g.
The formula for the the limiting reagent is CO
The amount of excess reagent that remains after the reaction is 3.6 g.
What is limiting reagent?The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops.
The limiting reagent is determined by balancing the chemical equation as follows;
S + 2CO --------> SO₂ + 2C
From the reaction above;
1 mole of sulfur = 2 mole of carbon monoxide = 1 mole of sulfur dioxide
56 g of carbon monoxide (CO) = 64 g of sulfur dioxide (SO₂ )
22.4 g of CO = ? of SO₂
= (22.4 x 64)/56
= 25.6 g of SO₂
Thus, the maximum amount of sulfur dioxide (SO₂) that can be formed is 25.6 g.
The formula for the the limiting reagent is CO because it will be completely used up.
56 g of CO = 32
22.4 of CO = ?
= (22.4 x 32)/56
= 12.8 g
Excess mass of the sulfur that remains = 16.4 g - 12.8 g = 3.6 g
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b. Based on these half-reactions, write the reduction potentials for the electrodes that correspond to
points A and B on the graph, assuming standard conditions. (2 points)
A standard electrode potential is required in order to determine the reduction potential of a half-unique cell. The standard hydrogen electrode is used as a reference electrode for the measurement
What is the half cell's typical electrode potential?A standard electrode potential is required in order to determine the reduction potential of a half-unique cell. The standard hydrogen electrode is used as a reference electrode for the measurement (abbreviated to SHE). SHE has an electrode potential of zero volts.
How can the anode and cathode be determined from the reduction potential?By deducting the standard reduction potential for the reaction occurring at the cathode from the standard reduction potential for the reaction occurring at the anode, the standard reduction potential can be computed. Because oxidation is the polar opposite of reduction, the minus sign is required.
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look at the picture
Answer:
107 g
Explanation:
What's the molality of a solution with 120 g of NaCl and 30 kg of water?A)0.068B)0.004C)0.25D)6.8
Explanation:
Molality is the ratio of the amount of substance of a solute (in moles – n) to the mass in kilograms of the solvent (m).
The symbol for molality is usually W and it can be calculated by the following formula:
W = n/m
here, we need to calculate n of NaCl using the formula:
n = m/MM
where MM of NaCl is 58.5 g/mol
n = 120/58.5
n = 2.05 moles
W = 2.05/30
W = 0.068 mol/Kg
Answer: A) 0.068
9N 18N Draw the net force arrow on the diagram and state the direction. Net force direction=
The Net force is 20.12 N and acts in a direction 26.56° South of East.
What is a Net Force?A net force is a force that is the vector sum of all the forces acting on an object.
The net force is also known as the resultant force.
The net force produces the same effect as all the forces acting together on an object.
The net force of the given forces in the diagram is calculated as follows:
The forces acting on the object are an 18 N force acting in a direction to the east and a 9 N force acting vertically downward in a direction south of the object.
The two forces form two sides of a right angle triangle.
Net force is calculated using Pythagoras' rule:
Net force = √ (18² + 9²)
Net force = √ (324 + 81)
Net force = √ 405
Net force = 20.12 N
The direction of the Net force = tan⁻¹ (9 / 18)
The direction of the Net force = tan⁻¹ 0.5
The direction of the Net force = 26.56° South of East
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3.7 x 10^24 carbon atoms, how many moles of carbon do you have?
Answer:
6.15 moles
Explanation:
1 mole of C has 6.02 x 10^23 atoms
the number of mole in 3.7 x 10^24 is
(1 mole)(3.7 x 10^24)/(6.02 x 10^23)
= 6.15 moles
An unknown element Y with atomic number 14 is found in nature as a mixture of three isotopes. Isotope 28 has a percentage of 92.2% and isotope 29 which has a percentage of 4.7%. The third isotope is isotope 30 a- What is the percentage of its presence in nature? b- What is the expected chemical symbol for the previous isotope?
a) The percentage of presence in nature of 1st 2nd and 3rd isotopes is 92.2% 4.7 % and 3.1 %.
b) The chemical symbol for isotopes is ²⁸Si , ²⁹Si , ³⁰Si.
Element with atomic number 14 silicon . chemical symbol is Si.. Four isotopes of silicon's occur in natural environment- ²⁸Si , ²⁹Si , ³⁰Si ³²Si. The ²⁸Si , ²⁹Si , ³⁰Si is stable isotopes. And the fourth one ³²Si is radiogenic. Silicon atom have mass of 28 amu. ²⁸Si is the most abundant isotope of silicon has percentage of 92.2% . ²⁹Si is 4.7 % and the third is ³⁰Si is 3.1 %.
Thus, An unknown element Y with atomic number 14 is found in nature as a mixture of three isotopes. isotopes 28 has percentage of 92.2 % and isotopes 29 which has percentage of 4.7 %.the third isotopes is 30.
a) The percentage of presence in nature of 1st 2nd and 3rd isotopes is 92.2% 4.7 % and 3.1 %.
b) The chemical symbol for isotopes is ²⁸Si , ²⁹Si , ³⁰Si.
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jfvbgbgvcfxfhhgIhhjj
Answer: what?
Explanation:
Answer: Huh?
Explanation:
Under improper storage, chlorine bleach decomposes and releases toxic chlorinegas, Cl2(g) What amount of toxic chlorine gas is released from 64mL of bleach at102kPa and 22°C?
We can use the law of ideal gases to solve this question.
The law of ideal gases is represented by the following formula:
[tex]Pv=nRT[/tex]Where P is the pressure, v is the volume, n is the number of moles, R is the ideal gas constant and T is the temperature.
The first step is to convert kPa to atm, °C to K and mL to L.
[tex]102kPa\cdot\frac{1atm}{101.32kPa}=1atm[/tex][tex]\begin{gathered} K=22+273 \\ K=295 \end{gathered}[/tex][tex]64mL\cdot\frac{1L}{1000mL}=0.064L[/tex]Now, we can use these values to find n, which is the amount of moles of the gas:
[tex]\begin{gathered} n=\frac{Pv}{RT} \\ n=\frac{1atm\cdot0.064L}{295K\cdot0.082\cdot\frac{atm\cdot L}{mol\cdot K}} \\ n=0.00264mol \end{gathered}[/tex]The answer is 0.00264 moles of chlorine are released.
A mining company wants to build a modern processing plant that is safe for workers. The location of the plant is close to the mining operation, which has inadvertently exposed some sources of radionuclides. Which is the best reason for consulting with a nuclear chemist before building the processing plant? to determine the level of radionuclides present to explain the health concerns that are related to radiation to destroy all the radionuclides in the area immediately to conduct tests to see if workers are affected by radiation
To determine the level of radionuclides present is the best reason for consulting with a nuclear chemist before building the processing plant.
What does the level of radionuclides mean?The level of radionuclides refers to the concentration in the atmosphere of radioactive compounds, which may be harmful to humans and therefore theirs levels should be monitored in order to maintain well being, especially in nuclear plants where they can be dangerous to the environment.
Therefore, we can conclude that it is required to know the level of radionuclides that are present in a processing plant.
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Answer:a
Explanation:
help please, and put explanation if possible!! :)
Answer:
Explanation:
Here's a quick review of the types of reactions.
Synthesis:
Two or more chemicals combine to make a new one.
Ie: A+B => AB or A+B => C
Decomposition:
The opposite of synthesis.
Ie: AB => A+B, C => A+B
Combustion:
Usually something reacting with oxygen. That something usually being a carbohydrate.
Ie: CH4 + 2O2 => CO2 + 2H2O
Single replacement:
One atom or molecule of a compound is knocked out of place and replaced by another chemical
Ie: A+BC => AB + C (note how the bond between B and C break while a bond between A and B form)
Double replacement:
A little like a single replacement, but two bonds break and two new bonds form between two reactants.
Ie: AB+CD => AC+BD
The actual answer
The first equation (2C3H7OH + 9O2....)
Is a combustion reaction because it contains oxygen and the oxygen is oxidizing something.
The second equation (2Al + 3 ZnCl2...)
Is a single replacement reaction because only one type of bond is being broken (the Zn---Cl bond) and only another one type of bond is formed (The Al---Cl bond)
The third equation (NaCl + AgNO3...)
Is a double replacement reaction because two types of bonds are being broken (Na---Cl and Ag---NO3) and two new bonds are forming (Ag---Cl and Na---NO3)
The fourth equation (N2H8CO3...)
Is a decomposition reaction because there is only one reactant and it is splitting into multiple pieces
The fifth equation (2Al + 3Br2...)
Is a synthesis reaction because two elements/ compounds are being combined to make a singular new compound
Write the balanced chemical equation and chemical reaction. Hydrogen + Oxygen=Water H₂ +0₂= 2H2O
The balanced chemical equation of the chemical reaction of hydrogen and oxygen is:
2 H₂ (g) + O₂ (g) → 2H₂O (l)
What is the balanced chemical equation?A balanced chemical equation is an equation in which the number of atoms of each element on the left side of the arrow (reactant side) is equal to the number of atoms of each element on the right side (product side) of the arrow.
A chemical equation is a way to express the chemical reaction in terms of symbols of the substances. It is very important that a balanced chemical equation must obey the law of conservation of mass.
By following the law, the total mass of the elements left side or reactant side should be equal to the total mass of elements on the right side (product side) in a balanced chemical equation.
Given, the chemical reaction of the water formation is as follows:
H₂ (g) + O₂ (g) → 2H₂O (l)
The number of oxygen on both sides is equal but the number of hydrogens is unequal. So multiply the hydrogen gas on the left side by 2.
So the balanced chemical equation of water formation becomes:
2 H₂ (g) + O₂ (g) → 2H₂O (l)
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