Question

Calculate the mass of 20 moles of
the molecules of oxgen (atomic mass
of 0 = 16 y)​

Answer 1

Answer:

The answer is 320 g.

Explanation:

No.of moles = Given mass / molar mass

20 = mass / 16

20 × 16 = mass

320 g = mass.

Hope it helps ..... I want to inform you one thing ....that.....if in the question only oxygen is given then you will have to put the molar mass as 16 g/ mol but if oxygen gas is given then you need to multiply 16 by 2 ie; 32g/mol.

Thankyou.