WorksheetsEmpirical and Molecular Formula
Total questions: 10
Worksheet time: 22mins
What is the formula mass of Potassium nitrate?
100 amu
98 amu
101 amu
102 amu
What is the molecular mass of Dinitrogen pentoxide?
100 amu
105 amu
108 amu
110 amu
Calculate the atomic mass unit of ZnS.
100 amu
97 amu
102 amu
89 amu
What is the formula mass of Al(MnO4)3?
389 amu
400 amu
384 amu
390 amu
How many percent of Potassium is in 1 mole of KNO3?
49.12% K
39.50% K
38.61% K
40.00% K
Determine the molecular formula of a compound with an empirical formula of NH2 and a formula mass of 32.06 amu
N2H4
NH4
N4H3
N4H2
How many percent of Manganese is in 1 mole of Al(MnO4)3?
42.97% Mn
45.05% Mn
54.04% Mn
44.05% Mn
A compound is found to contain 63.52 % iron and 36.48% sulfur. Find its empirical formula.
FeS
Fe2S3
Fe3S2
FeS2
A compound is found to contain 26.56% potassium, 35.41% chromium, and the remainder oxygen. Find its empirical formula.
KCrO7
K3Cr2O7
KCr2O7
K2Cr2O7
Determine the molecular formula of the compound with an empirical formula of CH and a formula mass of 78.110 u.
C4H4
C3H3
C6H6
C8H8
