Question

caculate molar mass.no of. molecules.no.of atoms and valume at ntp for 90 gram of ethane gas (c2h6)
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Answer 1

Answer:

(a) 2 moles of C

2

H

6

≡4 moles of CO

2

? ≡20 moles of CO

2

By cross multiplication,

Number of moles of C

2

H

6

=10

(b) 67.2/22.4=3 moles

3×6.022×10

23

=18.066×10

23

molecules.