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A 10.00 mL sample of a test solution is diluted in an environmental laboratory to a final volume of 250.0 mL. The concentration of the diluted solution is found to be 0.274 g/L. What was the concentration of the original test solution?
A syringe containing 1.67 mL of oxygen gas is cooled from 91.7 C to 0.6 °C. What is the final volume Vfof oxygen gas?
What is the maximum work that can be obtained from a 340 L tank of compressed air at 4350 PSI
What is the pH of a 0.125 M solution of the weak base B if (delta) H= -28.0 kj and (delta) S = -175 J/K for the following equilibrium reaction at 25 degrees C. B(aq) + H20 (l) BH+ (aq) + OH- (aq)
If the pressure of a gas is 61.49 atm in a piston, what is the pressure, in atm, if the volume of the piston is increased by a factor of 4 at constant temperature
Explain what percentage of the total phosphorus in a phosphoric acid solution adjusted to a pH of 12.00 would be in the form of PO4-3
a chemical engineer studying the properties of fuels placed 1.475 g of a hydrocarbon in the bomb of a calorimeter and
Problem- When a malonic ester synthesis is performed using excess base and 1,4-dibromobutane as the alkyl halide, an intramolecular reaction occurs, and the product contains a ring. Draw the product of this process
What is the pH of a solution made by diluting 1.00 mL of 0.10 M HCl with enough distilled water to make 1.00 L of solution? A. 1.0 B. 2.0
What protein complex in the inner mitochondrial membrane allows protons to return to the matrix
Identify the major type of attractive force between particles of each of the following substances: a) HCl; b) MgF2; c) PBr3; d) Br2; e) NH3.
The change in the Gibbs energy of a certain constant-pressure process as a function of temperature was found to fit the expression ?G (J K-1)=-73.1 J +42.8T. Calculate the value of S for the process
how many grams of sucrose C12H22O11 must be added to 522g of water to give a solution a vapor pressure 2.0mmHg less than that of pure water at 20 degrees celsius
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