Hay some one help me in this plzzz!!!!!!!!!!!!?

Question

The octane present in gasoline burns acordin to the following equation:-

2C8H18(l)+25O2(g)=16CO2(g)+18H2O(l)

a)How many moles of O2 needed to react full with 4 moles of octane?

b)How many moles of CO2 can be producedfrom one mole of octane?

c)How many moles of water are produced by the combustion of 6 moles of octane?

d)If this reaction is to be used to synthesise 8 moles of CO2how many grams of oxygen are needed?How many grames of octane will be used?

KINDLY LET ME KNOW WITH THE DETAIL OF EACH

Answer 1

The coefficients of the equation tell you the ratio of the moles-

a) 2 moles of octane require 25 moles of O2, therefore 4 moles will require 50 moles of O2. (25x2)

b)2 moles of octane produce 16 moles of CO2, therefore 1 mole will produce 8 moles of CO2 (16/2)

c)2 moles of octane produce 18 moles of H2O, therefore 6 moles will produce 54 moles H2O (3x18)