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How many grams of steam at 105 degree celcius must be mixed with 25g of ice at -15 degree celcius in an adiabatic calorimeter with a heat capacity of zero in order to produce a final mixture of 5g of ice with some water at 0 degree celcius and 1atm?
When 7 mL of a solution containing 3 M KNO3 is diluted to 21mL, a dilute solution is formed. What is the NO3- concentration in 10mL of the dilute solution?
A 6.269 g sample of NiCl2·2H2O is heated until all the water of hydration is removed. What will be the mass of the remaining NiCl2?
substance a and b are the same mass and at the same initial temperature. When the same amount of heat is added to each the final temperature of a is 75 degrees celsius
If B gas at 0.221 bar is injected into a container at 665 °C that contains excess A, what are the partial pressures of all gases present at equilibrium?
describe an experiment using only hot and cold water that would allow you to verify that the heat capacity of your coffee-cup calorimeter
A 68.0 mL solution of 0.500 M Cd(NO3)2 is prepared. What mass of NaOH is needed to precipitate the Cd2+ ions from this solution?
t 50°C the value of KW is 5.5 x 10-14. What are the molarities of hydronium ion and hydroxide ions in a neutral solution at this temperature.
When heated, hydrogen sulfide gas decomposes according to the equation above. A 4.40 g sample of H2S(g) is introduced into an evacuated rigid 1.50 L container. The sealed container is heated to 583 K and 5.72x10^-2 mol of S2(g) is present at equil..
The gas receives 525 J of heat from its surroundings and does 428 J of work. What is its final internal energy?
Starting from the left side of the periodic table, the melting and boiling points of the elements first increase, and then decrease
A piece of metal that has a density of 5.2 g/cm3 and a mass of 100 g was placed in a full jar of water. How many mL of water spilled out of the jar?
The vapor pressure of carbon tetrachloride, , is 0.354 atm and the vapor pressure of chloroform, is 0.526 atm at 316K . A solution is prepared from equal masses of these two compounds at this temperature
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