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What mass of trisodium phosphate is required to prepare 250.0 ml of a solution which is 0.30 M in sodium ion?
The osmotic pressure was found to be 1.86 torr at 25°C. What is the molar mass of the polyethylene. R= 62.4 L-torr per mol Kelvin
if the freezing point of a 0.106m CH3COOH solution is -0.323 degrees celcius, what is the percent of acid that has undergone ionization?
if 525 g of NaOH are dissolved to a final total of 50.0L what is the molarity of the solution
comment on the situation in this case. is the positive charge of hydronium ion on the least electronegativity atom? is this reasonable? is there a choice?
The specific heat capacity of mercury at 25°C is 1.400×10^-1 J/g/K. For a 8.25×10^2 g sample of mercury, how much energy is required to raise the temperature from 22.4°C to 29.4°C? (Assume that the heat capacity is constant over this temperature r..
calculate the change in entropy that occurs when 18.53 g of ice at -10.7°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel.
Determine the partial pressure of Ar, argon gas in the flask and A flask is filled with 1.20 of argon Ar gas at the temperature of twenty five degree Celsius.
How many moles of ammonia will be required to produce 10.0 mol of water
In a dry cell, MnO2 occurs in a semisolid electrolyte paste and is reduced at the cathode. The MnO2 used in dry cells can itself be produced by an electrochemical process of which one half-reaction is shown below.
Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by moisture in the food, which is transferred to other components of the food. As the water becomes hotter
Which of the following would be expected to have the highest pH?
15.0 moles of gas are in a 7.00 tank at 20.0. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a = 2.300L(squared).atm/mol(squared) and b = 0.0430 L/mol.
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