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Draw a dilution scheme that would produce countable plates if the original culture has 4,730,000 viable cells/mL.
A solid mixture contains MgCl2 and NaCl. When 0.5000 g of this solid is dissolved in enough water to form 1.000 L of solution, the osmotic pressure at 25°C
Enough of a monoprotic acid is dissolved in water to produce a 0.0155 M solution. The pH of the resulting solution is 2.43
A reaction that occurs with large decrease in enthalpy and small decrease in entropy. D. A reaction that occurs with any size increase in enthalpy and any size decrease in entropy.
If one pipet volume of each of the following pipets (2, 5, 10 mL) of a 2.56x10-1 M sample are added to a 25 mL volumetric flask and it is filled to the line with water and well mixed, what is the concentration of the resulting solution?
Write the electron configuration of the atom in the third row of the periodic table that has the largest difference between the third and fourth ionization energies.
Provide the name of the major alkene product that results when (2S,3S)-2-bromo-3-methylpentane is treated with sodium methoxide in
If the half-life of a first-order reaction is 4.609 hours what is the instantaneous rate of the reaction in M/day when the concentration of A equals 0.251 M?
Professor Tipton, being an avid hunter, was stalking the woods for morels. He saw a giant morel next to a fallen tree. When he reached down to get it a small timber rattler bit his hand
From the following Information, calculate the standard change of enthalpy for the combustion of coal. Compound DeltaHf (kj/mol)
A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
Calculate the enthalpy of solution in kilojoules per mole of solute. Enter your answer numerically in kilojoules per mole of solute.
A compound contains only carbon, hydrogen, nitrogen and oxygen. Combustion of 0.314 g of the compound produced 0.426 g CO2, and 0.0620 g H2O.
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