Question

a compound has 40% of carbon by weight if the molecular weight of compound is 90 the number of carbon atoms present in one molecule of the compound are

Answer 1

40% of 90

=40*90/100

=4*9

=36

which means 3 carbon atoms

Answer 2

Answer:

40=x/90*100

360/10=36

36g

36/12=3atoms

Explanation: