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1. Consider a 2.00L sample of an ideal gas. If one increases the temperature from 200K to 300K and decreases the pressure from 720mmHg to 360mmHg, what will be the final volume?
2. What is the density of a sample of air (average molar mass is 28.8 g/mol) that has a pressure of 750torr and a temperature of 27 degrees C?
3. A 33.0 g sample of N2O(the 2 is small) is held in a 3.0 L container. What is the pressure if the temperature is 400K?
4. Consider a flask containing a mixture of helium and oxygen. The volume of the flask is 1.25 L, the temperature is 40.0 degrees C, and the total pressure is 705 torr. If the flask is known to contain 0.015 mol of He, how many moles of O2 are present?
5. How many liters of CO2, measured at STP, are produced when 10.0 kg octane undergoes complete combustion with sufficient oxygen? 2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O
In the combustion reaction of 149 g of propane with excess oxygen, what volume of carbon dioxide if produced at STP?
Glycerol HOCH2CH(OH)CH2OH is a nonvolatile, water-soluble material. its density is 1.25 g/mL. Predict the vapor pressure of a solution of 2.40 x 10^2 mL of glycerol, in 395 mL of water, at the normal boiling point of water.
We often hear the terms organic, natural, and chemical in the media. Organic and natural are usually used to imply that a product is "healthy" and/or "environmentally friendly" while chemical often implies negative implications for health and for ..
Determine the formation constant, Kf, of AC5. The solubility of AB(s) in a 1.000-M solution of C(aq) is found to be 0.166 M. What is the Ksp of AB?
The Ksp for Al(OH)3 is 2 x 10-32. At what pH will a 0.2 M Al3+ solution begin to show precipitation of Al(OH)3.
What is the total number of liters of O2(g) produced from the complete decomposition of 0.500 mole of KClO3(s)?
If 4 g of CuSO4 is dissolved in 9.0x10^2 mL of 0.40 M aqueous NH3, what are the concentrations of Cu2+, Cu(NH34 2+, and NH3 at equilibrium? (Kf = 5x10^13)
Suppose Joule encountered the waterfall at Niagara Falls. Calculate the height if the temperature difference between the top and bottom of the waterfall is 0.20° F.
The gas is collected over water . If 156 mL of gas is collected at 19oC and 769 mmHg total pressure, what is the mass of hydrogen collected?
Calculate the wavelength of the electromagnetic radiation required to excite an electron from the ground state to the level with n = 5 in a one-dimensional box 39.8 pm in length.
If the coal is burned in a power plant that uses 1900 tons of coal per day, what mass of calcium oxide is required daily to eliminate the sulfur dioxide?
if 2.325g of an unknown acid compound is made up to 200.0 mL with water. 10.00 mL of the resulting solution requires 15.43 mL of 0.1808 M NaOH.
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