Answer:
Mass (m) = Number of moles(n) × Molar mass (M)
A. 6.65 mol W
M (W) = 184 g/mol
n = 6.65mol
mass of W = 6.65 × 184 = 1223.6g
B. 0.588 mol Ba
M(Ba) = 137g/mol
n = 0.588 mol
mass of Ba = 0.588 × 137 = 80.556g
C. 68.4 mol Xe
M(Xe) = 131g/mol
n = 68.4 mol
mass of Xe = 68.4 × 131 = 8960.4g
D. 1.57 mol S
M(S) = 32.1 g/mol
n= 1.57 mol
mass of S = 1.57 × 32.1 = 50.397g
Hope this helps
