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antiseptic1488 [7]

3 years ago

6

Calculate the mass in grams of 202 atoms of iron

1 answer:

Sergeeva-Olga [200]3 years ago

4 0

Answer:

To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro's number: 6.02 x 10^23. Set up Equation Express the relationship of the three pieces of information you need to calculate the number of atoms in the sample in the form of an equation.

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How do the equilibrium concentrations of the reactants compare to the equilibrium concentrations of the product?

Scorpion4ik [409]

Answer: It depends equilibrium constant K

Explanation: You need to to have reaction formula.

If K >> 1 then concentrations of products are much bigger than

concentrations of reactants. If K < < 1, concentration of products is small.

6 0

3 years ago

A gas is being cooled down. Which option describes what will happen?

Yakvenalex [24]

D) The gas particles will move slower. Eventually they will start clumping together and become a liquid

I think its D but I could be wrong

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2 years ago

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The image shows an example of a sedimentary rock.

Pani-rosa [81]

Can I see the image?

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2 years ago

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How many grams of water are produced when 35.8 grams of Calcium hydroxide reacts with lots of Hydrochloric acid?

Veseljchak [2.6K]

Are produced 72 grams of water in this reaction.

<h3>Mole calculation</h3>

To find the value of moles of a product from the number of moles of a reactant, it is necessary to observe the stoichiometric ratio between them:

$Ca(OH)_2 + 2HCl = > 2H_2O + CaCl_2$

Analyzing the reaction, it is possible to see that the stoichiometric ratio is 1:2, so we can perform the following expression:

$MM_{Ca(OH)_2} = 74.1g/mol$

$MM = \frac{g}{mol}$

$74.1 = \frac{35.8}{mol}\\mol = 2$

So, if there are 2 mols of Ca(OH)2:

Ca(OH)2 | H2O

$\frac{1mol}{2mol} =\frac{2mol}{xmol}$

$x = 4mol$

Finally, just find the number of grams of water using your molar mass:

$MM_{H_2O} = 18g/mol$

$18= \frac{m}{4}\\m = 72g$

So, 72 grams are produced of water in this reaction.

Learn more about mole calculation in: brainly.com/question/2845237

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2 years ago

Which of the following is a chemical property? a

laiz [17]

The answer is A (The ability to react with oxygen)

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