Question

Calculate the percent by mass of the indicated element in the following compounds. Recall that 2 decimal places should be used for all molar masses, except for hydrogen.

a) CaH2: calcium =

b) UF4:: uranium =

c) C12H4Cl4O2: carbon =
hydrogen =
oxygen =

d) CaCO3: calcium =

Answer 1

a) CaH2: calcium = 94.11%
b) UF4: uranium = 69.93%
c) C12H4Cl4O2: carbon = 54.54%
hydrogen = 1.82%
oxygen = 18.18%
d) CaCO3: calcium = 40.04%