Inorganic Chemistry Answers

1. Calculate the amount of heat to be released when 6.50g of water vapor condenses.

1. Calculate the amount of heat required to evaporate 5.20g of liquid water

Calculate the molar concentration of solute in each of the following:

1. Exactly 7.59g of NH₃ dissolved in 1.500L of solution.
2. Exactly 0.291g of N₂SO dissolved in 8.65L of solution.
3. Exactly 85.2g of NaOH dissolved in 5.00L of solution.
4. Exactly 31.25g of NaCl dissolved in 2.00L of solution.
5. Exactly 6.00mg of atmospheric N₂ dissolved in water in a solution volume of 2.00L.

1. Calculate the amount of heat required to evaporate 5.20g of liquid water.

What mass of ZnCl2 can be prepared from the reaction of 3.27 grams of zinc with 3.30 grams of HCl? (MWZn=65.38 g/mol; MWHCl=36.458 g/mol;MWZnCl2=136.286 g/mol)

Zn +2HCl ZnCl2 + H2

What weight of limestone should be taken so that 1/20 the the number of milligrams of CaSO⁴, obtained will represent the percentage of CaO in the mineral?

3. Draw or sketch a schematic diagram for ash analysis on our limestone sample.

1. A mixture of BaO and CaO weighing 2.212 g is transformed into mixed sulfates (BaSO4 and CaSO4) weighing 5.023 g.

a. Calculate the number of grams of CaO and of BaO in the original mixture.

b. What weight of limestone should be taken so that 1/20 the number of milligrams of CaSO4 obtained will represent the percentage of CaO in the mineral?

explain how the sulfuric acid is formed

Lead metal is obtained from lead sulfide through the following reaction:

2PbS(s) + 2C(s) + 3O₂(g) → 2Pb(s) +2CO(g) + 2SO₂(g

For question (b) above, calculate the mass of lead metal obtained.