Question

calculate the number of moles of CO2 which contains 8.00g of O2.....best answer will marks as brainliest ❤ ✌ ❤ ✌ ❤

Answer 1

HEY FRIEND
32 gms of oxygen are present in 1 mole of CO2

8 grams of oxygen will be in (1 x 8)/32 moles of CO2 = 0.25 moles

1 mole = 6.023 x 1023 molecules

Thus, 0.25 moles = 6.023 x 1023 x 0.25 molecules 

= 1.5 x 1023 molecules contains 8 grams of O2.

Answer 2

Given weight Of O2= 8g
Molar mass of O2= 32g
Number of moles of Oxygen=
Given weight/molar mass
= 8/32
= 0.25 moles of O2
1mole of CO2 contains 1 mole of oxygen.
so
1mole of O2 -------> 1 mole of CO2
0.25 mole of O2---->?
=0.25 moles of CO2
∴0.25 moles of oxygen is present in 0.25 moles of CO2



Hope it help ful