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The standard molar heat of vaporization of her water is 40.79 kJ per mole. What mass of mass of steam is required to release 500 kilojoules of heat energy upon condensation?
The specific heat of water increases at a constant rate. The specific heats of NaOH, HCl, and the product of the reaction are the same as that of water.
a 10.0 g piece of metal at 100 c is transferred to a calorimetercontaining 50.0 ml of water initially at 23.0 c.
A lime-soda softening plant treats a flow of 150 MGD, and the water has 86 mg/l CO2. The commercial grade of quicklime has a purity of 85% and the soda ash has a purity of 95%.
Assume that you have an aqueous solution of an unknown salt. Treatment of the solution with dilute NaOH, Na2SO4, and KCl produces no precipitation. Which of the following cations might the solution contains?
Make a judgment as to the effectiveness of commercial liquid bleaches by noting the ingredients on the labels. Explain
According to the postulates of the kinetic theory of gases, the average speed of the molecules of a given gas is proportional to the. square root of the absolute temperature.
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.
how much energy in kilojoules is released when 33.0 rm g of ethanol vapor at 95.0circ rm c is cooled to -19.5circ rm c?
Compound A, C6H10O2, is optically active. It dissolves slowly in aqueous NaOH, consuming one equivalent of base. When the solution is acidified, A is slowly regenerated.
A gas sample with a mass of 0.440g has a volume of 0.224L at STP. The gas has a molar mass of
Using the information below, what is the most stable form of sulfur at 298K and 1atm? (no calculations needed) S(rhomic): V=0.016, delta H formation=0, delta G formation=0, Standard molar S=31.8, standard molar Cp=22.64 S(monoclinic)
Gasohol is a mixture of ethanol and gasoline used to increase the oxygen content of fuels, and thus reduce pollutants from automobile exhaust
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