Question

Calculate the percentage of Carbon and Hydrogen in Methane (CH4). Atoi
mass of carbon=12 gmol-1 and Hydrogen=1.0 gmol-1.
Calculate the number of grams of oxygen in 0.10 mol of Na2CO3.10H20.
Ahoth
111
104​

Answer 1

Answer:

1mole of Na

2

CO

3

.10H

2

O contains 13 moles of oxygen atoms.

0.1 mole Na

2

CO

3

.10H

2

O contains 13×0.1=1.3 moles of oxygen atoms.

Mass of oxygen atoms =1.3×16=30.8g.

Please mark me as branliest