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Dissolving 7.55 mg of the steroid hormone estradiol (a predominantly nonpolar, molecular solute) in 0.500g of camphor (a nonpolar, organic solvent) changes the freezing temperature of the camphor by -2.10°C. Given camphors freezing-point depression constant of -37.7°C/m, calculate the molar mass of estradiol.
The products of our reaction (1- and 2-heptene) can form peroxides upon standing in air for a prolonged period of time
Calculate the number of grams of Fe formed when 0.100 kg Fe2O3 of reacts.
Phenylacetic acid (C6H5CH2COOH) is one of the substances that accumulates in the blood of people with phenylketonuria, and inherited disorder that can cause mental retardation or even death
Following the procedure of this experiment, a student team used 0.266g of barium nitrate and 0.424g potassium iodate and collected 0.395g of barium iodate. What was the theoretical yield of barium iodate?
if 88.6L of H2 measured at STP is allowed to react with 158.3g of P4, what is the limiting reactant?
The reaction between ethyl iodide and hydroxide ion in ethanol (c2h5oh) solution, c2h5oh + oh --> c2h5oh + I, has an activation energy of 86.8 kj/mol and a frequency factor of 2.1 x 10^ 11
Graphite is a semi-metal composed of sheets of fused benzene rings. There are no bonds between sheets, only van der Waals interactions
If 3.00 g of (NH4)2SO4 is dissolved in enough water to form 200. mL of solution, what is the molarity of the solution?
The enzyme catalyzes the hydrolysis of esters such as methyl benzoate. Use the Michaelis-Menten and Lineweaver-Burke graphs to determine Km and Vmax
If an aqueous solution (solvent = water) is 0.5 molal in NaClO, what is the mole fraction of NaClO that is present? Hint: assume you have 1.00 kg of total solvent in your sample.
what would be the chemical equation to this problem? In an investigation of the reaction between copper(II) ions, Cu2+, and hydrazine, N2H4, in alkaline conditions the following observations were made: 25 mL of a solution containing 25 g/L CuSO4.5..
Is the reaction spontaneous?
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