Question

Type the correct answer in the box.

Given:

8CO + 17H2 → C8H18 + 8H2O

In this chemical reaction, how many grams of H2 will react completely with 6.50 moles of CO? Express your answer to three significant figures.

________grams of H2 will react completely.

Answer 1

27.6 grams of H2 will react completely

Step-by-step explanation:

8CO + 17H₂ → C₈H₁₈ + 8H₂O

First of all, find out the moles of CO from the reaction.

If you want to know, how many moles of H₂ will react with 6.50 moles of CO you should make a rule of three, following the equation above.

8 moles of CO __ react ___ 17 H

6.5 moles of CO ___ react __ (6.5 . 17 ) / 8 = 13.8125 moles

Now, that we have the moles we can convert them to grams.

Molar mass . moles = gram

Molar mass H₂ = 2g/m

2 g/m . 13.8125 moles = 27.6 g