General Chemistry Answers

Aluminum metal (Al) reacts with sulfur (S) toproduce aluminum sulfide (Al2S3) according to this balanced chemical equation:2 Al(s) + 3 S(s) àAl2S3(s)How many gramsof aluminum will react completely with 2.50 x 1024atoms of sulfur?

1 mole of O2 gas at 1 bar and 0 C was compressed from 22.71 L to 2.25 L under isothermal conditions

a) Calculate ΔG for this compression process by using Van der Waals equation

b)Calculate ΔGR

1.52 g of aluminum reacted with excess chlorine gas to give an 83.5% yield of aluminum chloride. Calculate this mass of aluminum chloride.

Find out the number of moles of sugar that must be reacted to produce 3.2 grams of alcohol.

Calculate the weight of sugar that must be fermented to produce a liter of alcohol (denisty = 0.79 g/mL)

Calculate the theoretical yield of iron(III) oxide (Fe2O3) in grams.

If the reaction between aluminum and flourine, 30.0 grams of the product is experimentally

 obtained when 0.45 mole of aluminum is used. Assuming that aluminum is the limiting

reactant, calculate the percentage yield of the reaction.

 Balanced Equation: 2𝐴𝑙 + 3𝐹2 → 2𝐴𝑙𝐹3

If 12 grams of butane (C4H10), a fuel in cigarette lighter, reacts with 12 grams of O2, how

many grams of the products will be formed?

 Balanced Equation: 2𝐶4𝐻10 + 13𝑂2 → 8𝐶𝑂2 + 10𝐻2𝑂

I.       Suppose a substance has been prepared that is composed of carbon, hydrogen, and nitrogen. When 0.1156 gram of this compound is reacted with oxygen, 0.1638 gram of carbon dioxide (CO₂) and 0.1676 gram of water (H₂O) are collected. If all the carbon in the compound is converted to CO₂

A chemical reaction has an equation as shown:

AB + 2 CD --> 3 E + 1/3 A₃D₆

The following are the ΔfH⁰: (kJ/mol)

AB = 324

E = 24

CD = - 76

A₃D₆ = - 76