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Compute the volume in milliliters of a .45 mol/L barium chlorate solution that contains 125. mmol of barium chlorate.
For the reaction: H2SO4(aq) + 2 KOH(aq) --> K2SO4(aq) + 2 H2O To find the concentration of H2SO4, a 25.00 mL sample was titrated with 0.8752 M KOH. It took 31.79 mL of KOH to reach the endpoint of the reaction. What is the concentration of the H2S..
The partial pressure of O2 in a sample of air on a mountain top is 115 mmHg. The oxygen makes up 21% of the gas in the atmosphere. What is the total atmospheric pressure on the mountain top?
Manganese has a body-centered structure cubic unit cell and has a density of 7.88 g/cm^3. from this information determine the length of the edge of the cubic cell
write the expression for the equilibrium constant kc for the following chemical reaction?4h3oaq 2cl-aq mno2s mn2aq
Determine the changes in entropy (of the system, the surroundings, and the universe) for each step of the cycle and the cycle overall. Evaluate the maximum efficiency of the engine, assuming that the heat is supplied in step (2).
In each part, two solutions are mixed together. If a reaction occurs, write the balanced chemical equation and the net ionic equation for the reaction.
An experiment shows that a 248mL gas sample has a mass of 0.433g at a pressure of 745 mmHg and a temperature of 28 degrees C. What is the molar mass of the gas
a cylinder with a moveable piston contains 0.553 mol of gas and has a volume of 253 ml. what will its volume be if an
Calculate the equilibrium constant (Kc) and 25 degrees C from the free-energy change for the following reaction: Zn (s) + 2Ag(aq) Zn (aq) +Ag (s)
Which of the following substances would be expected to be the most soluble in CCl4? Answer with explanation as to why. a)NH3
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
if the sealed-tube manometer shown below had a height difference of 20.5 inches between the mercury levels what is the
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