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A 2.9 m solution of methanol (CH3OH) in water has a density of 0.984 g/ml. What are the a) mass percent, b) molarity, and c) mole fraction of methanol in this solution?
The specific heat of liquid water is 4.184 J/g x C. Calculate the energy required to heat 10.0 g of water from 26.5 C to 83.7 C.
If the O2 was the excess reagent, 8.3 mol of H2S were consumed, and 137.1g of water were collected after the reaction has gone to complain, what is the percent yield of the reaction?
The base solution was added to the acid solution but was not stirred while temperature measurement were not made: c.) Some of the base splashed out of the calorimeter while pouring:
What mass of natural gas (CH4) must burn to emit 470. kJ of heat? CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g).
A fluoridated water supply contains F- at a concentration of 8.9 ppm. What is the maximum concentration of Mg2+ that can exist in this water supply without causing precipitation.
You have two gas tanks, one is 7.00 L and the other is 3.50L, and one of the tanks has oxygen in it and the other has acetylene. If the tank wth the oxygen has a pressure of 145 atm, what is the pressure of the other tank?
If 100mL of 0.01 M CaCl2, 100mL of 0.01 M Sr(NO3)2 and 100 mL of 0.01 M Na2SO4 are mixed together; what is the Ca2+ concentrationin solution and which precipitates will form?
if 0.100 M HCl were titrated with 0.100 M NaOH, what would be the pH of the solution: a. before the addition of NaOH? b. at the equivalence point? c. at the halfway point?
The amount of energy needed to heat 2.00 g of carbon from 50.0 C to 80.0 C is 42.6 J. what is the specific heat capacity of this sample of carbon.
Chlorine has an average atomic mass of 35.453 amu. The main isotopes of chlorine are 35Cl which has an atomic mass of 34.968 amu and 37Cl, which has an atomic mass of 36.956amu. Given this, what is the percent abundance of each isotope in natural ..
Concentration of H 2 is observed 2.15 moles/L When the reaction N 2 (g) + 3 H 2 (g) ?? 2 NH 3 (g) comes to equilibrium. Determine the numerical value of the Kc equilibrium constant?
At a fixed temperature and pressure, how does the value of the heat of sublimation of a substance compare with that of its heat of deposition?
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