# quimistry

How many grams of chromium are needed to react with an excess of CuSo4 tp produce 27 g Cu?

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1. Just so the chem teachers know what your school subject is...

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2. 1. Write the equation and balance it.
2. Convert 27 g Cu to moles. moles = grams/molar mass.
3. Using the coefficients in the balanced equation, convert moles Cu to moles Cr.
4. Now convert moles Cr to grams. g = moles x molar mass.

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3. 14.7

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posted by hannah

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