Which Of The Following Would Weigh The Highest?

Which Of The Following Would Weigh The Highest?

A. 0.2 mole of sucrose (C12H22O11)

B. 2 moles of CO2

C. 2 moles of CaCO3

D. 10 moles of H2O

Mass of given sample = Molar mass X number of moles m = M X N

(a) 0.2 moles of sucrose (C12H22O11): Molar mass of sucrose (C12H22O11) = 342g/mole Thus, the mass of 0.2 moles of sucrose (C12H22O11) = 342 X 0.2 = 68.4g

(b) 2 moles of CO2 = 2×44 = 88g

(c) 2 moles of CaCO3 = 2×100 = 200 g

(d) 10 moles of H2O = 10×18 = 180 Thus, the mass of 0.2 moles of sucrose (C12H22O11) would weigh the highest.

Leave a Comment