Inorganic Chemistry Answers

1. Considering the following reaction: 3Si + 2n2 →Si3N4

2. When 26.8 moles of Si react with 21.845 moles of N2, how many moles of Si3N4 are formed?

3. What is the limiting reactant?

2. A 0.500 g sample of pure CaCO3 is dissolved in water to which 50.00 mL of HCl solution has been added. The solution then requires 6.20 mL of NaOH solution of which 1.000 mL = 1.010 mL of the HCl solution. What is the normality of each of the two solutions?

1. What is the normality of KOH solution if 45.18 mL are required to neutralize 0.300 g of pure oxalic acid (H2C2O4·2H2O)?

Automobile air bags are inflated by nitrogen gas generated by the rapid decomposition of sodium azide. If an air bag has a volume of 36 L and is to be filled with nitrogen gas at 1.15 atm and 26.0OC, how many grams of NaN3 must be decomposed?

NaN₃(s) = Na(s) + N₂(g)

How many grams of Al2O3 are formed from 15.0 L of O2 at 97.3 kPa & 21°C? 

Al + O₂ = Al₂O₃

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)).