Answer:
0.019 mole CuCl₂
0.0093 mole Al
Explanation:
To convert between grams and moles, you need to calculate the molar mass for each molecule. The molar mass is calculated using the molecular weights of each element. These values can usually be found on the periodic table. Once you have calculated the molar mass, you should multiply the ratio by the given value while allowing for the cancellation of units.
Reactant CuCl₂
Cu: 63.546 g/mol
Cl: 35.453 g/mol
Molar Mass (CuCl₂): 63.546 g/mol + 2(35.453 g/mol)
Molar Mass (CuCl₂): 134.452 g/mol
2.50 g CuCl₂ 1 mole
-------------------- x ---------------------- = 0.019 mole CuCl₂
134.452 g
Reactant Al
Molar Mass (Al): 26.982 g/mol
0.25 g Al 1 mole
--------------- x ------------------- = 0.0093 mole Al
26.982 g
