a) moles of malachite in 1g:

1g / (221.12g/mol) = .004522 mol

(b) moles of CuO produced:

.72g / (79.55g/mol) = .009051 mol

(c) ratio of moles of CuO produced per moles of malachite decomposed:

2CuO/CuCO3(OH)2 2*79.5/221.1 = 0.719

3. Use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO₂ is also a product of the decomposition.

CuCo3*Cu9OH)2 -----> 2Cuo+CO2+H2O

4. Predict the mass of CuO expected to result from the decomposition of the malachite, based on the balanced equation.

5. Compare the mass obtained from the mass predicted, and discuss reasons for any discrepancy.

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  1. I THINK I've taken care of this at the original post.

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