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The diameter of a neutral helium atom is about 1.0 multiplied by 102 pm. Suppose that we could line up helium atoms side by side in contact with one another. Approximately how many helium atoms would it take to make the distance from end to end 1 cm?
25.00 ml aliquots of thiis solution was titrated with monoprotic strong base NaOH (0.0800 M). The titre volume of NaOH was 40.00ml. Calculate the molecular weight of H2A.
A photomultiplier is being used to detect 770 nm infrared photons from the excitation of potassium. These photons impinge on a 2 cm square cesium metal surface inside the photomultipler, there is enough energy to release electrons from this metal...
Draw the structures of the bases in DNA and indicate the H bonding interactions between the base pairs.
Supercooled (metastable) water vapor commonly occurs in the atmosphere if dust particles are not present to begin condensation of the liquid.Sometimes small particles,such as tiny crystals of silver iodide
Polypropylene can be made with varying degrees of crystallinity. If it is processed to have an amorphus structure (where the side-chains are ordered randomly, which statements
a compound has a molar mass of 100 gmol and the percent composition ofnbsp 65.45 c 5.5 o. determine the empirical
a 2.85 g sample containing only mgo and cuo is placed in a 3.00 l container. the container is filled with co2 to a
Glycine has a standard entropy of 103.5J/K/mol and methylamine has standard entropy of 243.41 J/K/mol. How is this possible if glycine has a higher heat capacity.
Calculate the vapor pressure of water above a solution prepared by dissolving 35.0 g of glycerin (C3H8O3) in 140 g of water at 343 K. (The vapor pressure of water at 343 K is 233.7 torr)
Equal volumes of 1 x 10-4 M solutions of Cd2+ and CO32- ions are mixed in one flask and equal volumes of 1 x 10-4 M solutions of Ag+ and CrO42- ions are mixed in a second. Which substances precipitate given that the Ksp values of CdCO3 and Ag2CrO4..
What is the voltage of the cell: silver-silver chloride electrode || saturated calomel electrode given that the potential for the Ag|AgCl electrode in a saturated KCl
The ideal gas law (PV=nRT) provides relationships among pressure, volume, amount, and temperature of a gas inside a container. If the Kelvin temperature in a container is doubled, which of the following changes may occur?
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