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What is the mass concentration of water vapor in the atmosphere at 25oC when the relative humidity is 60% and the saturation vapor pressure is 2800 Pa
7.04 g of CuNO3 is dissolved in water to make a 0.300 M solution. What is the volume of the solution.
A sample of carbon dioxide gas occupies 617 mL at 0.812 atm and 11?C. What will the pressure be at a volume of 717 mL and a temperature of 16?C?Answer in units of atm
A 35.0 mL sample of 0.150 M acetic acid (CH3COOH) is titrated with 0.150 M NaOH solution. Calculate the pH after the following volumes of base have been added.
the rate at which a substance through a semipermeable membrance is determined by the diffusivity D(cm^2/s)of the gas . D varies the membrance temperature
Questions on chemical equations - Write a balanced equation for this reaction. Include the states of matter for each compound.
A sample consisting of 1-bromopropane and 1-chloropropane isinjected into a gas chromatograph quipped with a nonpolar column.which compound has the shorter retention time? Explaine the answer.
An experiment shows that a 115 mL gas sample has a mass of 0.169 g at a pressure of 699 mmHg and a temperature of 31C.What is the molar mass of the gas?
Many important drugs contain the amine functional group, which makes them basic. Many drugs also contain an amide group, which is effectively neutral. Suggest a way to separate ephedrine, a stimulant and decongestant drug shown below, from phenace..
Barium sulfate, BaSO4, is made by the following reaction: Ba(NO3)2(aq) + Na2SO4(aq) à BaSO4(s) + 2NaNO3(aq).
Determine the oder of the reaction in H2O2 and KI. Explain how you arrived at your answer. Calculate the rate constant, k, and write the rate law expression for the catalyzed decomposition of hydrogen peroxide.
Using the relationship between energy and wavelength (Beer's Law), explain which direction (higher wavelength or lower wavelength) the (max wavlength) will be found for butene compared with that for a butadiene
If the pressure of "wet" hydrogen is assumed to equal atmospheric pressure and the volume is recorded, will the calculated moles of hydrogen gas be too high or too low?
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