1) If 6.25 moles of CO2 are produced, how many moles of O2 were used?

Explanation:

Explanation:

1 mol of methane is 16 grams. Therefore, if you have 100 grams of methane, it means that you have

100

16

=

6.25

moles of methane.

When you burn 6.25 moles of methane, you produce 6.25 moles of carbondioxide.

Your reaction is wrong though. I want to correct it.

C

H

4

+

2

O

2

→

C

O

2

+

2

H

2

O

When you burn 6.25 moles of methane, you need 12.5 moles of oxygen gas.

When you burn 6.25 moles of methane, you produce 6.25 moles of carbondioxide (275 grams of

C

O

2

) and 12.5 moles of water vapour (225 grams of

H

2

O

).

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explanation:

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error