When copper(II) nitrate reacts with sodium hydroxide, copper (II) hydroxide is produced. How many grams of Cu(OH)2 can be prepared from 12.7g of Cu(NO3)2 and excess NaOH?

Answer 1

This four step process will work all of your stoichiometry problems. Copy and save this.
1. Write and balance the equation.
Cu(NO3)2 + 2NaOH ==> Cu(OHN)2 + 2NaNO3

2. Convert grams of what you have to mols.
mols = grams/molar mass = ?

3. Using the coefficients in the balanced equation, convert mols of what you have [in this case mols Cu(NO3)2] to mols of what you want [in this case Cu(OH)2].

4. Now convert mols Cu(OH)2 to grams.
grams = mols x molar mass

Post your work if you get stuck.

Answer 2

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