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Question- What is the recommended daily protein allowance for say a 70 kg person and why you need any amino acid intake, considering that protein breakdown (turnover occurs all the time in the body, and the amino acids can be recycled.
Please demonstrate all work. Thank you in advance
a mixture of propane 75 mol and hydrogen are burned with 25 excess air. fractional conversions of 95 of the propane and
A zero-order reaction has a constant rate of 3.20×10-4 . If after 60.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration?
Which of the following would be expected to have the lowest vapor pressure at room temp. a-Ethanol, bp= 78C b- methanol, bp= 65c c- water, bp = 100C d- acetone, bp= 56C
Which gives a better measure of the pH: the universal pH paper or a pH meter. Can distilled water be an effective buffer
The pressure of a gas is 817 torr at 55°C. The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 102 torr. What is the resulting temperature of the gas?
Compound B gave a positive 2,4-dinitrophenylhydrazine test, but a negative result when treated with the Tollens reagent. However, B did give a positive iodoform test. The 1H NMR spectrum for Compound A showed the following
A 2.154-g sample of HgO produces 125 mL of oxygen collected over water at 24 degrees C and an atmospheric pressure of 763 mm Hg. Calculate the STP molar volume for oxygen.
Question- Chemists commonly use a rule of thumb that an increase of 10 K in temperature doubles the rate of a reaction. What must the activation energy be for this statement to be true for a temperature increase from 18°C to 28°C
What are the advantages of working with microscale equipment as opposed to larger equipment in a Williamson ether synthesis of phenacetin experiment.
The Kb for an amine is 6.5x10-5. Explain what percentage of the amine are protons red if the pH of a solution of the amine is 9.725. Presume that all OH- came from the reaction of B with H2O)
Problem- Calculate the Molarity of NA+ in an aqueuous solution prepared by dissolving 1.00g of NACL(S) in water, and the final volume of the solution is 10.0 L Note g is the gram unit, and L is the liter unit.
1.What is the effect of the following on the observed melting point of the compound: a) insoluble purity, such as charcoal; b) incomplete drying of the sample; c) less recrystallization solvent was used than it was needed?
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