Convert 15.78 g of H2O2 to mols.
Convert 15.3 mols Au to g

.46 moles H2O2

3,014 grams Au

Explanation:

H2O2:

15.78g (1 mol/34g) = .46 moles H2O2

Au:

15.3mol (197g/mol) = 3,014 grams Au

mention the spill to the teacher clean the area and throw the broken pieces away

explanation:

answer; 4 electrons;