Question

Convert mass to moles for both reactants. (round to 2 significant figures.) 2.50 g cuci2 equals moles e 0.25 g Al equals moles DONE

Answer 1

To convert mass to moles, divide the mass by the molar mass. In this case, the moles of CUCI2 is 0.02 and the moles of Al is 0.01.

Step-by-step explanation:

The first step in converting mass to moles is to determine the molar mass of the substance. In this case, we have 2.50 g of CUCI2 and 0.25 g of Al. The molar mass of CUCI2 is 126.997 g/mol, and the molar mass of Al is 26.98 g/mol.

To convert mass to moles, we use the formula:

moles = mass / molar mass

Using this formula, we can calculate the number of moles for both reactants:

moles of CUCI2 = 2.50 g / 126.997 g/mol = 0.02 moles

moles of Al = 0.25 g / 26.98 g/mol = 0.01 moles

Answer 2

To convert a mass of a substance to units of moles, we would need the molar mass of the substance since is it describes the mass of one mole of that substance. For CuCl2, the molar mass is 134.45 g/mol. For Al, the atomic mass is 26.98 g/mol.

2.50 g CuCl2 ( 1 mol / 134.45) = 0.019 mol CuCl2
0.25 g Al ( 1 mol / 26.98 g ) = 0.0093 mol Al