A student mixed 1.5g of CaO with 2.5M HNO3. How many moles of CaO were reacted

Answer 1

CaO + 2HNO3 ---> H2O + Ca(NO3)2 ??

CaO = 40 + 16 = 56 grams/mol
so we have 1.5/56 = .0268 mols of CaO