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larisa86 [58]
3 years ago
12

How do I do question C?! Mass to moles

Chemistry
1 answer:
Andrei [34K]3 years ago
5 0
N(CuSO₄)=135/{63.5+32.1+4*16.0}=0.846 mol

n(CuSO₄*5H₂O)=135/{63.5+32.1+4*16.0+5*(2*1.0*+16.0)}=0.541 mol

n(H₃PO₄)=135/{3*1.0+31.0+4*16.0}=1.378 mol

n(BaCl₂)=135/{137.3+2*35.5}=0.648 mol
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<u>Explanation:</u>

We are given:

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To calculate the mass for given number of moles, we use the equation:

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To calculate the molality of solution, we use the equation:

Molality=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}

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Putting values in above equation, we get:

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