Inorganic Chemistry Answers

The rate of effusion of a particular gas was measured to be 24.0 mL /min. Under the same conditions the rate of effusion of pure methane gas, CH4 is 47.8 mL/min. What is the molar mass of the unknown gas?

1. A gram of soil sample as received contains 15.00% water. After oven drying to remove the mixture, it was found to contain 16.00% K. Find the %K in the original sample as received.

How many grams of salt are needed to prepare 500 mL of a 5% brine solution? *

what mass of barium chloride would be produced when a solution contains 0.3mol of barium chloride is mixed with excess lead (ii) nitrate

Determine the total dissolved Fe concentration. If groundwater at pH 7.5 is in equilibrium with PC02 = 10-1•5 atm and with siderite (FeC03(s)).

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