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What are the common Rf values that need to be known in biochemistry?
53.576 g magnesium sulfate di hydrate are dissolved in 250.00 ml of1.50 m barium nitrate solution to produce baso4
A researcher added 2.06g of the salt sodium nitrate, NaN0subscript 3, to a cylinder containing water. The cylinder diameter is 2 inches and the depth of the water in the cylinder is 4 inches. Determine the concentration of salt in the solution,
a sample of powder was found at a crime scene. it is believed that the powder is cocaine. the only four elements in the
Problem- Aluminum has a density of 2.699 g/cm3. The atoms are packed in a face-centered cubic crystal lattice. What is the radius of the aluminum atoms
A system absorbs 159 kJ of heat, and performs 83 kJ of work on the surroundings. What is the change in E of the system
Calculate the pH of a solution that has an ammonium chloride concentration of .05 M and a sodium acetate concentration of .045 M
what is the structure of the polymer formed from pentamethylene diamine and sebacoyl chloride with the repeating
Aspartame (C14H18N2O5) is a solid used as an artificial sweetener. Its combustion produces carbon dioxide gas, liquid water, and nitrogen gas. What is the coefficient of aspartame in the balanced equation for the reaction? (Balance the equation wi..
Is 1.39 at 400oC. Suppose that 1.4 mole of P4 (g) and 1.25 mol of P2(g) are mixed in a closed 25.0-L at 400oC. Determine the reaction quotient and the direction of the reaction.
calculate the minimum volume of 1.10m cuso4 solution that is required to ensure complete reaction of 1.04g of fe. since
Problem- An object is moving at 18 m/s at an angle of 220 counterclockwise from the x axis. An object is moving at 18 m/s at an angle of 220 counterclockwise from the x axis.
Calculate the amount of heat absorbed by the solution. Find the enthalpy change for the dissolution of KOH
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