CH 124 - 002 General Chemistry (Web-Enhanced) Spring 2025 L.Liban
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If a 2.15-g sample of a gas occupies 750. mL at STP, what is the molar mass of the gas at 125°C?
It is found that 250. mL of gas at STP has a mass of 1.00 g. What is the molar mass? 1000ml=1L
What is the molality of a solution of 50.0 g of propanol, CH OH in 152 mL water, if the density of water is 1.00 g/mL?
A 3.14 molal solution of NaCl is prepared. How many grams of NaCl are present in a sample containing 3.00 kg of water?
What is the correct equilibrium expression for the following reaction?
2Cu(s) + O2(g) 2CuO(s)
Calculate the value of the equilibrium constant in the industrial synthesis of ammonia. The equilibrium constant expression may be written as:
The equilibrium concentration of nitrogen in the reaction mixture at 600°C if [N ] = 7.62
The equilibrium constant for the given reaction below
CaCl2 (s) + 2H2O(l)CaCl2(s) + 2H2O(g)
is
What is the hydronium ion concentration of a solution with a pH of 6.0?
What is the [OH-] of a solution which has a pH = 10.95?
What is the correct expression for the equilibrium constant, Keq, for the following the reversible reaction?
2NH3(g)) N2(g) + 3H2 (g)
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