Question

Will fan and medal! How many moles of ethane (C2H6) would be needed to react with 62.3 grams of oxygen gas?

Unbalanced equation: C2H6 + O2 → CO2 + H2O

Show, or explain, all of your work along with the final answer.

Answer 1

2 C2H6 +7 O2 = 4 CO2 + 6 H2O
moles O2 = 62.3 g / 32 g/mol=1.95
the ratio between C2H6 and O2 is 2 : 7
moles C2H6 required = 1.95 x 2/7=0.557

Answer 2

@Austin316 thanks!! do you mind helping with a couple more?

Answer 3

yeahh i can try.

Answer 4

What is the limiting reactant when 4.5 moles of aluminum react with 6.7 moles of oxygen gas?

Unbalanced equation: Al+O2--> Al2O3

Show or explain all of your work along with the final answer.

Answer 5

1) first balance the reaction:
4 Al + 3 O2 -----> 2 Al2O3
4 moles of aluminum reacts with 3 moles oxygen to form 2 moles aluminum oxide.
4.5 moles of aluminum would require (x 3/4)= 3.38 moles O2. Since there are 6.7 moles oxygen,
aluminum is limiting reactant

Answer 6

4.5 moles of aluminum would require (x 3/4)= 3.38 moles O2. can you explain this part I'm a little confused haha