2/ A ballon filled with a fixed mass of carbon dioxide gas has the following ini
ID: 879266 • Letter: 2
Question
2/ A ballon filled with a fixed mass of carbon dioxide gas has the following initial conditions. P1= 202.6 kPa, V1= 35mL and T1=65*C degree. The pressure on the balloon is increased to 3000. mm Hg and the temperature is incrased to 195*C degree. Determine the volume of the CO2(g) at these new conditions.
3/ A 2 liter soda bottle is filled with nitrogen dioxide gas at a temperature of 298 K and 2.5 atmospheres pressure. Determine the mass of nitrogen dioxide gas in the bottle.
4/ Solid potassium reacts complety with liquid water to form aquaeous potassium hydeoxide and hydrogen gas. Wrute the chemical equation for this reaction. How many liters of hydrogen gas will form if 150.grams of potassium react with an excess amount of water and the hydrogen gas is collected at 20*C and 1.15 atmospheres pressure?
5/ Determine the pressure in mm Hg of 5.75 x 10^26 atoms of argon gas in a 3.50 liter container at a temperature of -35*C.
6/ A mixture of 10 grams of hydrogen gas and 10 grams helium gas is placed in a 1 liter container at 27*C. Calculate the partical pressure of each gas and the total pressure.
7/ A flexible container at 450 kelvin contains 6.50 liters of carbon dioxide gas at a pressure of 2280 torr. Calculate the volume of the gas when the temperature is increased to 900 kelvin and the pressure is decreased to 760 torr simultaneously.
8/ calculate the pressure of 725 grams of argon gas in a 0.450liter container when the temperature of the gas is 55 degrees celsius.
9/ the thermal decomposition of mercuric oxide produces liquid mercury and oxygen gas according to the following equation. 2HgO(s) -----> 2Hg(I) + O2(g) how many liters of oxygen gas are produced when 6.20 grams of mercuric oxide decomposes at 35 degrees celsius and 715 torr.
10/ The mole fraction of Calcium chloride in water is 0.324. how many grams of CaCL2 are in 125 grams of this solution?
11/ The solubility of O2(g) is 2.2 x 10^-4 M at O*C and 0.10atm. Calculate the solubility of O2(g) at 0*C and 0.35atm
12/ Ascorbic acid( vitamin C, C6H8O6) is a water soluble vitamin. A solution containing 80.5 grams of ascorbic acid dissolved in 210 grams of water has density of 1.22g/mL at 55*C. Calculate the mass percentage, the mole fraction of the solute, the molarity, and the molarity of the ascorbic acid solution.
Explanation / Answer
P2 = 3000 mm Hg = 399.96 kPa
P1V1/T1 = P2V2/T2
V2 = 202.6 kPa*35*468k/399.96*338
the volume of the CO2(g) V2 = 24.54 ml
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