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Question: Gas is confined in a tank at a pressure of9.8atm and a temperature of26.5°C. If two-thirds of the gas is withdrawn and the temperature is raised to68.0°C, what is the pressure of the gas remaining in the tank?
A solution is initially 0.050M in acetate, CH3COO- (Kb = 5.6 x 10^-10). 10.0mL of 0.10 M HCl is added. a) Write the chemical equation for the nuetralization reaction that occurs.
50.00ml of BiO3- is titrated with 26.43ml 0.02982M Fe2+. What is the molar concentration of BiO3-? How many mg of NaBiO3 were in the 50.00ml sample? [BiO3-] = _______________ M mNaBiO3 = _______________ mg
An aerosol can has an internal pressure of 3.85atm at 25 degrees celsius. What temperature is required to raise the pressure to 18.0atm
How many milliliters of an aqueous solution of 0.202 M potassium chloride is needed to obtain 11.4 grams of the salt
An airplane is pressurized to 650 mmHg. If air is 21% oxygen, what is the partial pressure of oxygen on the plane?
At what pH will a solution 0.15 M Cu2+ begin to precipitate as Cu(OH)2? The Ksp for Cu(OH)2 is 1.6 × 10-19.
Calculate the solubility (in grams per 1.00*10^2mL of solution) of magnesium hydroxide in a solution buffered at pH = 12.S1= 1.2*10^-8 g/(1.00*10^2mL)
Compute the molecular formula of CH 3 COOH the percent composition of acetic acid is 39.99% C and 6.73% H. The remainder of the compound is oxygen.(The molar mass of acetic acid is 60.06 g/mol.)
A chemical property of a substance can be observed without changing its composition or interacting with another substance. -A physical property can be observed without a chemical reaction.
Benzoic acid is used to titrate an unknown base, and the pH of solution is recorded during the titration. Halfway to the ultimate endpoint of the titration, the pH of solution was recorded at 7.64. What is the value of Kb for the unknown base?
Iodine-131 is used in the form of sodium iodide to treat thyroid cancer. The isotope has a 1/2 life of 8.05 days
The heat of vaporization of water is 44.0 {rm kJ/mol}. Calculate the quantity of energy released when enough water vapor condenses to form 0.42 inches of rain over an area of one square mile.
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