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Barium sulfate, BaSO4, is so insoluble that it can be swallowed without significant danger, even though Ba2+ ions are toxic. At 25 °C, 1.00 L of water dissolves only 0.00245 g BaSO4. Calculate Ksp for BaSO4.
If a process is carried out at constant pressure P and the volume V of the system decreases, then is delta V negative or positive and is the work w negative, positive, or zero
Explain what is the percent purity of a sample of impure H2C2O4• 2H2O (oxalic acid dehydrate, 126.07 g/mol) if 0.9157 grams of this material require a titration with 27.67mL of a potassium permanganate solution
A reaction has the following rate law Rate = k[A][B]2. In experiment 1, the concentrations of A and B are both 0.10 mol L-1; in experiment 2, the concentrations are both 0.30 mol L-1. If the temperature stays constant, what is the value of the rat..
state whether the equilibrium mixture contains mostly products or reaction and why. HNO2(aq) + HS(aq) ---->(double arrow) H2S(g) + NOs(aq) and Cl(aq)+ H2O(l) ---->(double arrow) OH(aq) + HCl(aq)
A solid mixture consists of 51.0 g ofKNO3 (potassium nitrate) and 9.0 gofK2SO4 (potassium sulfate). The mixture is added to 130g of water. If the solution described in the introduction is cooled to 0 degrees celsius
How many grams of CO2 are formed by the complete reaction of 33.7 g of limestone. What is the volume in liters of this CO2 at STP
36 grams of an impure zinc sample are reacted with excess hydrochloric acid and 10 L of hydrogen gas are collected at STP, what is the percentage of PURITY of zinc sample
What is the mole fraction of Xe in the mixture?
Which substance meets the requirements: crsytalline solid; brittle; poor electrical conductor in the solid state; good conductor in liquid phase; melts at high temperature
Copper metal reacts with hot concentrated sulfuric acid solution to form aqueous copper (II) sulfate, sulfur dioxide gas, and water
Nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation N2(g) + 3H2(g) = 2NH3(g). Delta H(rxn)=-56 kJ. The delta H(rxn) was determined using Hess's Law and the following three related reactions:
At what temperature (in oC) does 11.31 g of krypton occupy a volume of 9.66 L at a pressure of 1.91 atm
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