Identify the formula unit from the following?
a) CH4
b) H2O
c) Cu2SO4
d) HCl
Atomic mass unit is …the mass of C-12 atom.
a) 1/12
b) 12
c) half
d) none of these
1 amu is equivalent to…………
a) 1.66 × 1023g
b) 1.66 × 10-24g
c) 1.66 × 10-23g
d) 6.02 × 10-25g
1 mol of C-12 atoms………..
a) 6.02 × 10-25
b) 6.02 × 10-24
c) 6.02 × 1023
d) 6.02 × 10-23
Relative atomic mass of Oxygen is :
a) 1.0079amu
b) 15.8994 amu
c) 22.9897 amu
d) 107.8082 amu
The percentage occurrence in nature of Cl-37 is………
a) 25%
b) 75%
c) 50%
d) 45%
