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A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium? What is the partial pressure of argon?
Calculate the uncertainty (in nm) in the position of an electron with the velocity of 2.00x103 m/s (the velocity is the same as in the preceding problem) and the uncertainty in the velocity is 1%. (2 significant figures are plenty).
A helium-filled weather balloon has a volume of 815 L at 22 oC and 752 mmHg. It is released and rises to an altitude of 7.16 km, where the pressure is 364 mm Hg and the temperature is -25oC
The solubility of calcium carbonate (CaCO3) is 9.3 multiplied by 10-3 g/L. Calculate the solubility product of this compound.
A gas is confined to a container with a massless piston at the top.A massless wire is attached to the piston. When an external pressure of 2.00 rm atm is applied to the wire, the gas compresses from 5.90 to 2.95 L. When the external pressure is in..
How many grams of NaOH and H2O are required to prepare 100 g of a 28.7% NaOH by weight solution?
a hypothetical metal has a face-centered cubic unit cell and a density of 6.12 gcm3. the molar mass of the metal is
Find the pH of the resulting solution when 20.00mL of a 0.1000M triethylamine (CH3CH2)3N (Kb = 5.2x10-4) solution is titrated with 20.05mL of a 0.1000M HCl solution.
At a certain temperature and pressure 1.4 L of N2 reacts with 2.1 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced?
at conditions of 785.0 torr of pressure and 15.0 Celsius temperature, a gas occupies a volume of 45.5 Celsius what will be the volume of the same gas at 745.0 torr and 30.0 Celsius.
Calculate the pH of a buffer formed by mixing 95 mL of 0.13 M lactic acid with 85 mL of 0.15 M sodium lactate.
Write the formula of the reactants and products-including the symbols for the state- (s), (l), (g), (aq)- then balance the equation.
Write the equation for the formation of the precipitate in the test tube containing the saturated solution of calcium hydroxide.
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