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Calculate the velocity of a neutron whose de broglie wavelength is 500pm. The mass of the neutron is 1.009 amu.
A filtration could be very time consuming if it were not aided by a gentle suction which is developed by:
A bottle containing 315 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere of average radius 7.5x10^5 km, calculate the average density of the star in units of grams per cubic centimeter.
the major differences in the dehydration of an alcohol by an E1 and E2 reaction mechanism.
Alkynes can be hydrated in the presence of acid and HgSO4, by electrophilic addition of a molecule of water to the triple bond. The reaction proceeds by way of a carbocation intermediate
A 25.0 mL sample of a solution of the weak base aniline, C6H5NH2, requires 25.67 mL of 0.175 M HCl to reach the equivalence point. (Kb for aniline = 4.0 x 10-10)
What is the approximate ratio of the molar concentrations of CO_2(aq) in the soda before it is opened to that in the soda after it has been opened and reached equilibrium with the surrounding atmosphere
A microwave oven operates at 2.50GHz. What is the wavelength of the radiation
A gas occupying a volume of 395 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
8.20 grams of solute in 861 grams of water lower the freezing point to -0.430 degree celsius calculate the molecular mass of the nonionic solutes.
What volume (V) of 2.20 M NaOH solution must you add in order to prepare an acetate buffer of pH 5.24? (the pKa of acetic acid is 4.76)
When mixed HCl an acid and NaOH a base will react with each other. a) Write the balanced neutrali zation equation for this reaction
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