Calculate the amount of substance (in moles) corresponding to the following data: a) 180g H2O;

Calculate the amount of substance (in moles) corresponding to the following data: a) 180g H2O; b) 32g Cu; c) 8g CuO d) 6.4 g Cu

a) Let’s calculate the amount of water:

n (H2O) = m (H2O): M (H2O) = 180: 18 = 10 mol;

b) find the amount of copper:

n (Cu) = m (Cu): M (Cu) = 32: 64 = 0.5 mol;

c) determine the amount of copper oxide:

n (CuO) = m (CuO): M (CuO) = 8: 80 = 0.1 mol;

d) calculate the amount of copper serving:

n (Cu) = m (Cu): M (Cu) = 6.4: 64 = 0.1 mol.

Answer: a) 10 mol; b) 0.5 mol; c) 0.1 mol; d) 0.1 mol.