Question

which weight is least
a) two gram atoms of nitrogen b)one mole of ag
c) 22.4 litre of O2 at 1 atmospheric pressure
d) 6.02 into 10^23 atoms of c
#need proper explanation​

Answer 1

Answer:

a) Molar mass of single nitrogen atom 14g/mol. Therefore weight of 2 grams of nitrogen atoms = 2 x 14 = 28 grams.

b) Ag refers to silver.

Molar mass of silver = 107.8 grams.

c) The weight of 22.4 litres of $O_{2}$ at 1 atmospheric pressure = 32 grams.

d) 6.02 x 10²³ of Carbon atoms = 1 mole of carbon atoms = 12 grams.

Therefore, we can see that:

a) 28 grams

b) 107.8 grams

c) 32 grams

d) 12 grams

Here we can see that Option D, 6.02 x 10²³ of Carbon atoms weigh only 12 grams. Therefore it weighs the least.

Concepts used:

→ Molar mass: Molar mass refers to the mass of grams of one mole of any given substance. Molar mass is measured as g/mol.