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A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing air under high pressure in a spherical air tank that measures 78.0 cm wide. The biologist estimates she will need 5100 L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer in atmospheres.
Calculate the work, heat, energy and enthalpy change upon: a) expansion by 3.3 L at p=const (isobaric). b) isothermal expansion by 3.3. L against a constant external pressure of 30.0 kPa c) reversible isothermal expansion by 3.3 L.
energy level in a hydrogen atom absorbs a photon of light with a frequency of 7.308 x 1014 s-1. Calculate the new energy level the electron will occupy.
Chemical Structure and Hydrogen Bonds in Base Pairs, Draw the chemical structure of a correctly base paired G-C pair, then re-draw the pair with a propeller twist these answers should all be on one page following box G.
Write the electron configuration of selenium. List the following compounds in order of increasing lattice energy: NaCl, NaBr, MgO, CaO.
Calculate the pH when 16.00 mL of 0.100 M sodium hydroxide is added to 10.00 mL of a 0.100 M phosphoric acid solution.
Calculate the pressure of a helium sample at -207.3°C and 768 mL if it exerts a pressure of 175 kPa at 25.0°C and 925 mL
if you have 380.00 ml of water at 25.00 degrees celcius.and add 130 ml of water at 95.00 degrees celcius, what is the final temperature of the mixture?
A chemist adds 295.0mL of a 0.071M potassium permanganate (KMnO4) solution to a reaction flask. Calculate the mass in milligrams of potassium permanganate the chemist added to the flask.
Calculate the pH of a solution prepared by mixing equal volumes of 0.21M methylamine (CH3NH2), Kb = 3.7X10^-4 and 0.61M CH3NH3Cl
What are the main mononitro products of the nitration of the following compounds - Write structural formulas for the compounds
Dr. Goodchem observed that he had extracted 15.5 mL of Citral. If the density of pure Citral is 0.888 g/mL, what was the % composition of Citral found in the Orange extract.
Determine the ionization energy (in kilojoules per mole) of a metallic element if light of wavelength 67.2 nm ejects electrons with a speed of 2165 km/sec.
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