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Suppose 7.17 g of barium acetate is dissolved in 350.mL of a 79.0mM aqueous solution of sodium chromate.Calculate the final molarity of barium cation in the solution. You can assume the volume of the solution doesn't change when the barium acetate is dissolved in it.Round your answer to 1 significant digit.
WHen dimethyl ether (CH3OCH3) is burned, 1450 kj of heat are released per mole. How much heat is released when 3.89 grams of dimethyl ether is combusted
1. Which of the following is NOT a form of potential energy. a. compression of a spring b. electrostatic force c. gravity d. a free electron moving at 1000 m/s e.
What mass of melamine, C3N3(NH2)3, will be obtained from 101.5 kg of urea,CO(NH2)2, if the yield of the overall reaction is 72.0%?
Consider 2 Al + 6 HCl → 2 AlCl3 + 3 H2 , the reaction of Al with HCl to produce hydrogen gas. This reaction has a yield of 82.5 percent. How much HCl are needed to produce 14.0 L of H2 at 351 K and 1.11 atm
The enthalpy of hydration associated with anhydrous LiI forming LiI?2H2O is -45.53 kJ/mol. The enthalpy of solution for LiI?2H2O is -14.77 kJ/mol. What is the enthalpy of solution for LiI
the total pressure on the surface of titanis 1220 mmhg. the atmosphere consistsof 82 mol n2 12 mol ar and 6.0
if it takes 1.0 g of solid NaOH to change the pH of the solution containing a strong acid from 1.00 to 2.00, how much solid NaOH would be needed to change the Ph of this solution from 2.00 to 3.00? Assume that there is no change in the volume of t..
what is the freeenergy change for the equilibrium between hydrogen iodide hydrogen and and iodine at 453deg? i
A sample of helium gas occupies 945mL at 605 mmHg. For a gas sample at a constant temperature, determine the volume of helium at 745 mmHg?
A sample of the Dead Sea Scrolls gives a ^14C decay rate of 731 disintergrations/h. A modern sample gives 920 disintergrations/h. Estimate the age of the Scrolls from these data.
what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F? Show work.
1. What energy change is associated with the reaction to obtain one mole of H2 from one mole of water vapor? The balanced equation is 2 H2O(g) g 2H2(g) + O2(g) and the relevant bondenergies are: H-H = 436 kJ/mol; H-O = 467 kJ/mol; O-O = 146 kJ/mol..
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