The student used: 2g of copper oxide (in excess) 25cm^3 of a solution of dilute sulfuric acid with a concentration of 49 g/dm^3

The student used:

2g of copper oxide (in excess)
25cm^3 of a solution of dilute sulfuric acid with a concentration of 49 g/dm^3
Relative atomic masses: Cu = 63.5 O = 16
Relative formula mass of sulfuric acid = 98
Determine by how many moles the copper oxide (CuO) was in excess.

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