Answer:
b) increases by a factor of about 2.
Explanation:
Ignore the nitrogen and oxygen. Each gas acts independently of the others.
You have 0.02 mol of CO₂ gas at some pressure in equilibrium with the CO₂ in solution.
According to Graham's Law,
S = kp
That is, the solubility of a gas in a liquid is directly proportional to its partial pressure above the liquid.
If you add another 0.02 mol of CO₂, you have doubled the number of moles.
According to Avogadro's Law, doubling the number of moles doubles the pressure.
According to Graham's Law, doubling the pressure doubles the solubility.
The solubility of CO₂ increases by a factor of two.
Answer:
E. Evaporation to dryness
Explanation:
E. - Evaporation to dryness is the best method for the recovery of solid KNO3 from an aqueous solution of KNO3.
(KNO3 is very soluble, and will violently decompose if overheated.)
Paper chromatography is for separation of different weight molecules in solution.
B. Filtration won't work on a solution
C.Titration would contaminate the salt with something else and is used
to determine concentrations
D. Electrolysis would destroy the salt
This is your answer: - A calorie is a measurement of heat energy (1/1000) in mL and Calorie is the measurement of food, 1000 times a calorie
Answer: option E. Evaporation to dryness
Explanation:
Answer:
1.1 × 10² g
Explanation:
The combustion of gasoline releases energy that is used to move the car. The enthalpy of reaction (ΔH°rxn) of the combustion of gasoline is 47 kJ/g, that is, 47 kiloJoule are produced per gram of gasoline burned. The mass of gasoline to be burned to release 5,375 kJ is:
5,375 kJ × 1 g Gasoline/47 kJ = 1.1 × 10² g
