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Explain why is it necessary to determine the temperature during the determination of the density of the sodium chloride solutions? Which factor, mass or volume utilized in calculating the density would be affected by temperature. Explain.
hot methanol and then stored the recrystallization solution until the next lab period. What possible effect on your results due to this experimental error could take place?
a certain first-order reaction a-gtproducts has a rate constant of 6.60times10-3 s-1 at 45 c. how many minutes does it
explain the earodynamics characteristics of margarine firmness and coefficient of friction important in agricultural engineering research and development.
A test for vitamin C (ascorbic acid, C6H8O6) is based on the reaction of the vitamin with iodine: C6H8O6(aq) + I2(aq) ? C6H6O6(aq) + HI(aq) (a) A 25.0 mL sample of juice requires 11.8 mL of a 0.0164 M I2 solution for reaction
what tempreture must 0.040 moles of water vapor be heated in a 500ml flask before the pressure in the flask becomes 2 atm.
The density of silver is 10.5 g/mL. What is the mass (in grams) of a piece of silver with a volume of 23.6 mL
an ideal gas is expand at a constant temperature with the pressure changing from 10 bar to 1 bar. assume Cp,m = 5/2R calculate delta U, delta H, delta S
If the first order half life is 300. seconds at 35 degrees Celsius and the initial concentration of hydrogen peroxide in a commercial Winn-Dixie product is 0.050M, then after 30 minutes, calculate the concentration of the hydrogen peroxide expecte..
Explain how to write a balanced chemical equation (with phases identified) for the neutralization reaction that occurs for HF (aq) and Ba(OH)2(aq).
Lactic acid (C3H6O3) which occurs in sour milk and foods such as sauerkraut, is a weak monoprotic acid.? The pH = 0.10 M solution of lactic acid is 2.43 What are the values of Ka and pKa for lactic acid
If potassium ion is in solution, the ion could be reduced to potassium metal. In acidic solution, which would be more thermodynamically favorable: the reduction of K+ or the reduction of H+
How much HCl is leftover after the 20.0 mol of HCl reacts with the 12.5 mol of NaOH?
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