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Determine freezing point of solution which contains .31 mol of sucrose in 175g H2O. kf=1.86 degreesC/m
which of the following chemical combinations of the elements would be most exothermic, Na and Cl
Calculate the approximate molecular mass of an unknown protein which had an elution volume of 9.0mL on the column.
Suggest reasons why recrystallization from water would probably not be suitable procedure for purifying
Find the intrinsic conductivity for germanium. (Assuming ni = 2.5x 1019/m3 at room temperature.)
An experiment requires 42.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder.
Determine the volume of sulfuric acid solution needed to prepare 37.4 g of aluminum sulfate, Al2(SO4)3, by the following reaction
Sulfuric acid is a very strong inorganic used in commercial and non-commercial laboratories. What is the molarity of a 70.00 wt % solution of sulfuric acid in water? The density of the solution is 1.6503 g/mL.
Rapid Burning of Sugar Versus Its Stability Against Oxygen, Why is sugar stable under standard conditions.
The reaction of calcium hydride with water can be used to prepare small quantities of hydrogen gas, as is done to fill weather observation balloons.
An unknown sample with a molecular mass of 180.og is analyzed to yeild 40% c, 6.7% H, and 53.3% o. What is the empirical formula and the molecular formula of this compound?
if i have 5.6 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until its volume is 4.8 liter what will the new pressure inside the piston be?
Carbon monoxide gas reacts with hydrogen gas at elevated temperatures to form methanol according to this equation. CO(g) + 2 H2(g) CH3OH (g)
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