Avogadro’s number is represented by……
a) AN
b) NA
c) An
d) Na
1 mole = ………………….
a) 6.02 × 10-23 units
b) 6.02 × 1023 units
c) 6.02 × 1024 units
d) 6.02 × 1022 units
A computer has counting speed 10 billion atoms per second will take …….. years to count one mole atoms.
a) three billion
b) two million
c) three million
d) two billion
58.5g NaCl containing ……units of NaCl.
a) 6.02 × 10-23
b) 6.02 × 1023
c)6.02 × 1024
d) 6.02 × 1022
The total number of ions in one mole of NaCl is………..
a) 12.04×1023 ions
b) 1.204×1024 ions
c) 6.04×10-23 ions
d) 61.04×10-23 ions
Counting unit to measure amount of substance is………..
a) gram
b) parsec
c) mole
d) all of these
