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Montano1993 [528]
3 years ago
7

A solution of copper sulfate is treated with zincmetal. How many grams of copper are produced if 2.9 g of zinc are consumed?

Chemistry
1 answer:
Marat540 [252]3 years ago
7 0

Answer:

2.8212 g

Explanation:

The reaction of copper sulfate with zinc is shown below as:

CuSO_4+Zn\rightarrow ZnSO_4+Cu

Given that :

Amount of zinc = 2.9 g

Molar mass of zinc = 65.38 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus, molesare:

moles= \frac{2.9\ g}{65.38\ g/mol}

moles= 0.0444\ mol

From the reaction,  

1 mole of zinc on reaction forms 1 mole of copper

Thus,

0.0444 moles of zinc on reaction forms 0.0444 mole of copper

Mass of copper = moles×Molar mass

Molar mass of copper = 63.54 g/mol

<u>Mass of copper = 0.0444 ×63.54 g = 2.8212 g</u>

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