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if a balloon initially has a P=27 atm at 250K and the temperature is raised to 300K, what chage in quantity of gas present must be made to maintain the pressure of the system assuming volume remains fixed?
a. 20% decrease in mole
b. 20% increase in mole
c. 25% increase ""
d. 33% """"
e. none of the above.
can anyone explain?
ans. E.
2. a solution of KNO3 is known to have a 0.564 molal conc. to calculate the concentration of this solution in terms of molarity, which of the following must be specified?
a. density of the solvent
b. volume
c. temp
d. solubility
i was not sure between a & b. the ans. is a. any help?
a. 20% decrease in mole
b. 20% increase in mole
c. 25% increase ""
d. 33% """"
e. none of the above.
can anyone explain?
ans. E.
2. a solution of KNO3 is known to have a 0.564 molal conc. to calculate the concentration of this solution in terms of molarity, which of the following must be specified?
a. density of the solvent
b. volume
c. temp
d. solubility
i was not sure between a & b. the ans. is a. any help?