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If you want to prepare a 0.5 M solution of ascorbic acid using 25.0 mL water, how many moles of ascorbic acid do you need? How many grams of ascorbic acid is this?
aluminum sulfate solution with water to a final volume of 1.450 L. Calculate the number of moles of aluminum sulfate before dilution.
Calculate the percent ionization of phenol (HC6H5O) in solutions of each of the following concentrations (Ka = 1.3e-10.) (a) 0.181 M % (b) 0.482 M % (c) 0.733 M %
water boils at 373 k.the molar enthalpy of vaporation for water is 407 kjmo1.if one mole of water is at 373 k when it
Know the reaction catalyzed by catalase. 1.What is the substrate of this enzyme? 2.What are the products? 3.Is catalase found in the cells of the human body?
Calculate the molarity of 52.56 grams of Al2(SO4)3 in 1.80 L of solution.
Determine ΔSsys separately for the volume and temperature changes and show that ΔSsys=0 for a reversible adiabatic process. Also, if the expansion had instead occurred irreversibly against a constant external pressure of 1 atm
Find the mass of a reactant using Dalton's law of partial pressures, ideal gas law, and stoichiometry - Determine the amount of zinc metal in grams consumed in the reaction.(Vapor pressure of water at 25 o C-23.8mmHg)
An experiment shows that a 249 -mL gas sample has a mass of 0.433 g at a pressure of 750 mm Hg and a temperature of 29?. What is the molar mass of the gas?
in a calorimeter 10.0 g of ice melts at 0oc. the enthalpy of fusion of the ice is 334 jg. how much heat was
imagine that you have a 7.00 gas tank and a 2.50 gas tank. you need to fill one tank with oxygen and the other with
a quanity of gas exerts a pressure of 98.6 kpa at a tempature of 22 degrees celcius. If the volume remains unchanged, what pressure will it exert at -8 degrees celcius
Briefly explain why you would expect benzoic acid to be soluble in the two solvents water and dicloromethane
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