Chemistry Answers

Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaH) to produce aqueous sodium bromide (NaBr) and liquid water (H, 0).

Suppose 75.2 g of hydrobromic acid is mixed with 14. g of sodium hydroxide. Calculate the maximum mass of sodium bromide that could be produced by the

chemical reaction. Be sure your answer has the correct number of significant digits.

Gaseous butane (CHa (CH,), CHg) will react with gaseous oxygen (0.) to produce gaseous carbon dioxide (CO,) and gaseous water (H, O). Suppose 4.1 g

of butane is mixed with 19.7 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the

correct number of significant digits.

A gas mixture is made by combining 7.1 g

7.1 g each of Ar,

Ar, Ne,

Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 16.83 L.

16.83 L.

What is the molar mass of the unknown gas?

A 1.55 g

1.55 g sample of an unknown gas at 67 

∘

C

67 ∘C and 1.05 atm

1.05 atm is stored in a 2.95 L

2.95 L flask.

What is the density of the gas?

How many grams of NH

4

Cl

NH4Cl will be formed by this reaction?

How much heat (kJ) is required to convert 50 grams of ethanol into its vapor or gaseous form? How much heat is released if the same amount of vaporized ethanol is available to return to its liquid form?

How many moles of potassium ions are in solution when 47.12g of K3PO4 is dissolved in water?

The decomposition of magnesium carbonate forms 15 grams of magnesium oxide (MgO) in an experiment based on this equation : MgCO3 MgO + CO2 . Solve for percentage yield

Calculate the ph of 0.01 M aqeous solution of sodium formate at

calculate how many moles of product form when 1.75 mol of the reactant completely reacts 2S(s)+3O2 yields 2SO3(g)