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3 years ago

In density when mass goes up does volume go down?

1 answer:

4 0

That depends upon the body that you are talking about but usually the volume would go up as well. They are directly proportional.

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The unbalanced equation for the reduction of copper(I) sulfide with oxygen is given below. What mass of copper is produced from

uranmaximum [27]

Answer: The mass of copper produced is 7.12 grams

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of copper (I) sulfide = 8.80 g

Molar mass of copper (I) sulfide = 156.2 g/mol

Putting values in equation 1, we get:

$\text{Moles of copper (I) sulfide}=\frac{8.80g}{156.2g/mol}=0.056mol$

The chemical equation for the reaction of copper (I) sulfide and oxygen gas follows:

$Cu_2S+O_2\rightarrow 2Cu+SO_2$

By Stoichiometry of the reaction:

1 mole of copper (I) sulfide produces 2 moles of copper

So, 0.056 moles of copper (I) sulfide will produce = $\frac{2}{1}\times 0.056=0.112mol$ of copper

Now, calculating the mass of copper from equation 1, we get:

Molar mass of copper = 63.55 g/mol

Moles of copper = 0.112 moles

Putting values in equation 1, we get:

$0.112mol=\frac{\text{Mass of copper}{63.55g/mol}\\\\\text{Mass of copper}=(0.112mol\times 63.55g/mol)=7.12g$

Hence, the mass of copper produced is 7.12 grams

6 0

3 years ago

Calculate the number of grams of carbon dioxide produced from 6 moles of oxygen gas. List only the number of grams of carbon dio

faust18 [17]

Answer:

g CO2(g) = 264.06 g

Explanation:

C(s) + O2(g) → CO2(g)

∴ moles O2(g) = 6 mol

∴ mm CO2 = 44.01 g/mol

⇒ mol CO2(g) = ( 6 mol O2(g) )×( mol CO2(g) / mol O2(g) ) = 6 mol CO2(g)

⇒ mass CO2(g) = ( 6 mol CO2(g) )×( 44.01 g/mol ) = 264.06 g CO2(g)

3 0

3 years ago

How many grams are in 562 dg? 56.2 g 56,200 g 5.620 g 5.62 g

lana66690 [7]

Answer:

56.2

Explanation:

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7 0

3 years ago

What is the volume of 70.0 g of ether if the density of ether is 0.70 g/mL?

frosja888 [35]

M=70.0 g
p=0.70 g/mL

v=m/p

v=70.0/0.70=100.00 mL

8 0

3 years ago

What is atom ? chemistry

Neporo4naja [7]

Answer:

atom is the smallest unit of matter that has the characteristic properties of a chemical element.

3 0

3 years ago