How many moles of ethane (C2H6) would be needed to react with 62.3 grams of oxygen gas? Unbalanced equation: C2H6 + O2 â ' CO2 + H2O Show, or explain, all of your work along with the final answer.

Question

chmvijay · Answer

can u balance and write the reaction

anonymous · Answer

2C2H6 + 7O2 --> 4CO2 + 6H2O
 right?

chmvijay · Answer

right

chmvijay · Answer

what is moleuclar weight of O2

anonymous · Answer

32.00

chmvijay · Answer

1mole of O2= 32g
7*32=224 g

224 g of Oxygen reacts with 2 moles of ethane
62.3 g of oxygen =2*62.3/224=0.5 moles of ethane
u got it

anonymous · Answer

That's the answer right? because if it is, you explain this sooo much easier than my chemistry teacher aha.

chmvijay · Answer

in what way she explained you can i know

anonymous · Answer

he goes through it with us, but he does not explain how to get the moles or any of it. He makes us pretty much explain it to ourselves.

chmvijay · Answer

humnnn any way i am sure its correct!!!

anonymous · Answer

Thank you VERY much. :)

chmvijay · Answer

ur welcome

anonymous · Answer

So that would mean that
How many grams of sodium sulfide can be produced when 45.3 g Na react with 105 g S? Unbalanced equation: Na + S â ' Na2S Show, or explain, all of your work along with the final answer.
2Na + S --> Na2S 
32.07 grams of sulfur react with 2 moles of sodium..l Now I'm stuck.

chmvijay · Answer

molecular weight of Na2S can u tell

anonymous · Answer

78.05 right?

chmvijay · Answer

wait for a while

chmvijay · Answer

here you have to find the first limiting reagent and then have to solve the reaction