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A solution is prepared by dissolving 3.65 g of an unknown nonelectrolyte in 15.00 g of cylcohexane (tf = 6.6 oC and kf = 20.0 oC/m). What is the molar mass of the unknown compound if the solution has a freezing point of -6.3 oC?
Determine the hydraulic conductivity and transmissivity of the aquifer and What would Q be if the hydraulic gradient
175g of water was heated from 15 degrees to 88 degress celsuis. how many kilocalories were absorbed by the water?
Calculate the probability of finding an electron that is described by this wavefunction in a volume of 1.0 pm3 (i) centred on the nucleus.
How many grams of H3PO4 are in 175 mL of a 3.5 M solution of H3PO4?
Molecules can be as small as a few atoms or as large as thousands of atoms. In 1962, Max F. Perutz and John C. Kendrew were awarded the Nobel Prize for their discovery of the structure of hemoglobin
How many moles of chloroform, CHCl3, are required to fill a 253-mL flask at 100.0°C and 940 torr?
find the molarity of 0.5 grams of sodium chloride is dissolved to make 0.05 ml of solution
A certain first-order reaction has a rate constant of 1.00x10-3 s-1. How long will it take for the reactant concentration to drop to 1/8 of its initial value?
If 1.56g of a gas has a volume of 1.00 L at .984 atm and 50 degrees Celcius, what is the molar mass of the compound
What volume of oxygen gas at 25 degrees Celcius and 1.00 atm is produced from the decomposition of 22.33 mL of a 30.0% (by mass) solution of hydrogen peroxide?
Solving this question helps the student to understand what is happening in a chemical reaction and to balance the given equation.
a metal object with a mass 19 degrees celsius is heated to 96 degrees celcius, then transfered to a calorimeter containing 75 grams of water at 18 degrees celcius. the water and metal object reach a final temperature of 22 degrees celcius? what is..
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