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Otrada [13]
3 years ago
10

If I have 20g of Sodium, how many moles of Sodium Oxide (Na2O) can be made?

Chemistry
1 answer:
Vika [28.1K]3 years ago
8 0
Mass:20g

Mole=20/[2(23)+16]
=0.32 mil
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Determine the molar mass of CuSO4 (the solute) in a 1.0M aqueous solution of CuSO4
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See explanation.

Explanation:

Hello,

In this case, we could have two possible solutions:

A) If you are asking for the molar mass, you should use the atomic mass of each element forming the compound, that is copper, sulfur and four times oxygen, so you can compute it as shown below:

M_{CuSO_4}=m_{Cu}+m_{S}+4*m_{O}=63.546 g/mol+32.00g/mol+4*16.00g/mol\\\\M_{CuSO_4}=159.546g/mol

That is the mass of copper (II) sulfate contained in 1 mol of substance.

B) On the other hand, if you need to compute the moles, forming a 1.0-M solution of copper (II) sulfate, you need the volume of the solution in litres as an additional data considering the formula of molarity:

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n_{solute}=1mol/L*1.5L=1.5mol

But this is just a supposition.

Regards.

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