Need some help with solving. Please give step by step instructions to these equa

Question

Need some help with solving. Please give step by step instructions to these equations. Im so lost.

1. How many moles of Butane gas, C4H10 react to produce 2.50 mol of water? How many moles of oxygen gas react?

based on the equation: 2 C4H10 (g)+ 3 02 (g)= 8 CO2(g)+ 10 H20 (g)

2. How many grams of chlorine gas must react to give 3.52 g of BiCI3? Based on the equation.

2Bi (s)+  3 CI2 (g)= 2 BiCI3(s)

3. How many militers of carbon dioxide gas at STP are produced from decomposition of 5.00g of ferric carbonate?

Based on the equation:

Fe2(C03)3 (s)= Fe203+ 3 CO2 (g)

Explanation / Answer

1. You have moles, so take 2.5 over ten, or .25. Multiply it by the coefficient of butane or oxygen. You need .5 moles of butane or .75 moles of oxygen.

2. 3.52 grams is 0.011162575941985 moles of BiCl3. Divide by two and multiply by three to get 0.01674386391 moles or 1.19 grams.

3.You have 0.017139899285952 moles of ferris carbonate, which will make 0.05141969785 moles of CO2. Each mol is 22.4 L at STP, so 1.1518 L or 1.15x10^3 mL.

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