Question

calculate the number of moles and molecules in the following masses ?
a)4 g of oxygen
b) 11g of c02
first correct answer and I will mark u as brainlist.....​

Answer 1

Answer:

Oxygen having 2 molecules

2× 16 = 32

so 4 g of oxygen = 4/32 = 1/8 = 0.125 mole

Molecules of oxygen = 0.125 ×6.022 ×10²³= 7.52 × 10²²

Co2 contains one carbon and two oxygen

so 12 +16×2 = 12 + 32 = 44

so 11 g of CO2

= 11/44 = 1/4 = 0.25 mole

molecules of CO2 = 0.25 × 6.022× 10²³

= 1.51× 10²³

Explanation:

⭐mark as brainliest⭐

Answer 2

Answer:

hope it's correct, mark me as the brainliest.