Question

What mass in grams is represented by (a) 0.40 mol of `CO_(2)` , (b) `3.00` mol of `NH_(3)` , (c) `5.14 ` mol `H_(5)IO_(6)` ? (C = 12 , O = 16 , N = 14 , H = 1 and I = 127)

Answer 1

Mass in grams = number of moles `xx` molecular mass.
Hence ,
(a) mass of `CO_(2) = 0.40 xx 44 = 17.6` g
(b) mass of `NH_(3) = 3.00 xx 17 = 51.0 `g
(c) mass of `H_(5) IO_(6) = 5.14 xx 228 = 1171. 92 g`