Actual number of atoms are shown in……… formula.
a) Empirical formula
b) Molecular formula
c) a & b both
d) none of these
CH2O is an empirical formula of……..
a) acetic acid
b) glucose
c) a & b both
d) none of these
The sum of atomic masses of all the atoms in one formula unit of a substance is called :
a) atomic mass
b) mass number
c) formula mass
d) atomic mass
Molecular formula of Ethane is……….
a) C2H8
b) C2H6
c) C2H2
d) none of these
NaCl has ……… formula mass.
a) 116 amu
b) 30 amu
c) 180 amu
d) 58.5 amu
The formula mass of an ionic compound expressed in grams is called……….
a) gram formula mass
b) gram formula
c) mole
d) All of these
