Question

3.Calculate the number of moles present in
i. 3.011* 10 number of oxygen atoms
ii. 60g of Calcium
iii. 8g of oxygen atoms
iv. 0.1 mole of carbon atom​

Answer 1

Answer:

We know, 1 mol of any substance contains 6.022 × 10²³ no of particles.

6.022×10²³ atoms are present in 1 mol of oxygen.

1 atom is present in 1÷6.022×10²³ mol of oxygen.

3.011×10²³ atoms are present in (1÷6.022×10²³) × 3.011×10²³ mol of oxygen.

= 0.5 mol of oxygen[Answer]

Explanation: