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Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several gases make up the remaining 1% of air molecules.
An "empty" container is not really empty if it contains air.
Part A: How many moles of Nitrogen are in an "empty" two-liter cola bottle at atmospheric pressure and room temperature (25 degrees Celsius). assume ideal behavior
Part B: How many moles of Oxygen are in an "empty" two-liter cola bottle at atmospheric pressure (1atm) at room tempertature (25 degrees celsius) assume ideal behavior
How much energy is released when 32.4 g of water freezes? The heat of fusion for water is 6.02 kJ/mol.
what will the maximum temperature reached by the resulting solution? [Assume that there is no heat loss to the container, that the specific heat of the final solution is 4.18 J/g*C, and the density of the final solution is that of water.]
Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 deg C , the total pressure in the container is 3.60 atm. Calculate the partial pressure of each g..
The Reaction of Ba(OH)2+2HCl=BaCl2+2H2O it requires 12.01mL of .03582 M HCl to react with 25.00ml of Ba(OH)2 solution calculate the concentration of the Ba(OH)
The decomposition of SO_2_Cl_2_ is first order in SO_2_Cl_2_ , and the reaction has a half-life of 245 min at 600 K. If you begin with 3.6e-3 mol of SO_2_Cl_2_ in a 1.0-L flask, how long will it take for the sample to decrease to 3.2e-4
Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water.
Calculate the wavelength of a neutron that has a velocity of 250 cm/s.
Saturated aqueous sodium chloride(d=1.2g/mL) is added to the following mixtures in order to dry the organic layer. Which layer is likely to be on the bottom in each case?
A bicyclist passes beneath it, traveling in a straight line at the constant speed of 10 m/sec. How fast is the distance between the bicyclist and the balloon increasing 2 seconds later?
Determine the original mass of liquid, G, that was placed in the container. (ignore the volume occupied by the liquid in these calculations.)
Explain why the C=C stretching mode gives rise to a rather weak IR band in 1-methylcyclohexane, while in its isomer
Write the net ionic equation for the following molecular equation. HBr is a strong electrolyte. HF is a weak electrolyte. KF(aq) + HBr(aq)---> KBr(aq) + HF(aq)
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