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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
Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.
A solution contains an unknown mass of dissolved silver ions. when potassium chloride is add to the solution.,a white precipitate forms.
Write a balanced equation for an acid-base reaction that would produce each of the following salts; predict whether an aqueous
Write a balanced equation for the conversion of C6H5CHOHCH3 to methyl ketone in the presence of I2 and NaOH. Identify which is being oxidized and which is being reduced.
A gas bottle contains 0.650 mol of gas at 730 mm Hg pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle.
In a 0.1 molar solution of NaCl in water, which one of the following will be closest to 0.1?" A) the mole fraction of NaCl B) The mass fraction of NaCl
calculate the molar mass of an unknown sunstance, if the freezing point of a solution containing 1.00 g of the unknown in 100g of camphor is 165.4 C.
Calculate the freezing point of a mixture that contains 4.68 g of diphenylamine (molecular weight 169.2 g/mol) dissolved in 46.64 g of cyclohexanol.
Mixture also contains He (helium gas). determine the partial pressure of the He gas?
Platinum crystallizes with a face centered cubic lattice. The atomic radius of platinum is 0.138nm, and the atomic mass is 195.1 . (a) Calculate the lattice parameter of Pt from these data
To prepare a fertilizer, an engineer dilutes a stock solution of sulfuric acid by adding 20.9 L of 6.50 M acid to enough water to make 500. L.
A solution of H2SO4(aq) with a molal concentration of 5.25 m has a density of 1.266 g/mL. What is the molar concentration of this
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