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A sample of gas inside a 150 mL piston has an initial temperature of 550 K and pressure of 8.0 atm. As the piston expands to 650 mL, the pressure decreases to 1.5 atm. What is the final temperature (in K) of the gas?
Determine the mass of Al is needed to combine with 3.077 kilo grams of Ammonium per chlorate NH 4 ClO 4 for this reaction? express your answer in units of g
How many molecules of acetylene (HCCH) react with 123 molecules of oxygen to produce carbon dioxide and water.
A flask contains 0.260 mol of liquid bromine, Br_2. Determine the number of bromine molecules present in the flask.
The mass of a cube of iron is 292 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions.
Calculate the mass of nitrogen dissolved at room temperature in an 77.0 home aquarium. Assume a total pressure of 1.0 and a mole fraction for nitrogen of 0.78.
Describe how branched-chain fatty acids affect the fluidity of membranes and rank the following fatty acids in the order of increasing solubility in water.
If 95 0C of heat are added to a pure gold coin with a mass of 20 gm, what is its temperature change? Specific heat capacity of gold is 0.128 .
Calculate How many grams of H2O at temperature 25 degree Celsius should be poored on the ice with no water in flask initially.
an aerosol spray can with a volume of 270 ml contains 3.2 g of propane gas propellant. what is the pressure in the can at 20 c.
The solubility of O2 (g) in water is 4.43mg O2/100 g H2O (20ºC and 1 atm). What is the molarity (M) of this saturated solution?
A solution is prepared by mixing 75.0 mL of 5.00 M HCl and 20.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution.
Determine which ion will precipitate first and at what concentration of sulfate ion will the first precipitate begin to form?
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