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Calculate the equilibrium concentrations of NH3 and H2S if a sample of solid NH4HS is placed in a closed vessel and decomposes until equilibrium is reached. (Hint: report 2 significant figures in answers.) At 21.8°C, Kc = 1.2 10-4 NH4HS(s) NH3(g) + H2S(g) [NH3] = [H2S] =
basketball with a volume of 3.50 Liters is left in a car when the temperature is 298 K. What will the volume of the ball be as the car heats up to 305 K during the day?
What is the molality of a solution that contains 2.93 grams of urea (molar mass = 60.0 g/mol) in 141 grams of benzene.
The boling point of water in city a is 94 degrees celcius and in city b it is 97 degrees celcius. which is at the higher elevation.
Trichloroacetic acid (CCl3CO2H) is a corrosive acid that is used to precipitate proteins. The pH of a 0.050 M solution of trichloroacetic acid is the same as the pH
A cook wants to heat 1.73 kg of water from 30.0C to 100.0C .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn.
A 5.00-L reaction vessel contains hydrogen at a partial pressure of 0.588 atm and oxygen gas at a partial pressure of 0.302 atm. Which element is the limiting reactant in the following reaction? 2H2(g) + O2 (g) -> 2H2O(g)
Is heat absorbed or evolved in the course of this reaction? Calculate the amount of heat transferred when 45.0 g of CH3OH (g) is decomposed by this reaction at constant pressure.
At standard temperature, a gas has a volume of 371 mL. The temperature is then increased to 131C, and the pressure is held constant. What is the new volume?
A rectangular block has dimensions 2.9 cm 3.5 cm 10.0 cm. The mass of the block is 615.0 g. What are the volume and density of the block?
calculate the ph that results when 100 mL a liquot of 0.0500 M is added to 400 M of a NH3/NH4+ buffer that is 0.200 M in NH3 and 0.300 M in NH4Cl
An 85.0g sample of iron requires 954 J of heat to raise its temperature 25.0C. What is the specific heat of the iron?
what is the limiting reactant when 3.41g of lithium with 2.79g of copper II nitride?predict the products, write a balanced equation, calculate the limiting reactant.
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