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What is the pH of a solution that is 0.75M in sodium acetate and 0.50M in acetic acid? (Ka for acetic acid is 1.85x10^-5)
Arrange the atoms I, Zr, Ag, and rb for smallest to largest first ionization energy. what does this say about metals vs nonmetals
The mass of a beaker is 123.2537 g. After carrots were added to the beaker, its mass is 128.2671 g. The sample was then placed in the oven to remove water.
Calculate the entropy change resulting from an increase in temperature from 285 K to 350 K of H2O2 given Cp = A + BT + CT^2 Where A=34.25, B = 55.18 and C = -35.15.
What is the mass percent of copper sulfate CuSo4 in a sample of cooper sulfate pentahydrate CuSO4*5H2O
What is the first step in an aldol condensation reaction. A. Elimination of hydroxide. B. Bromination of carbonyl compound. C. Addition into the carbonyl. D. Formation of the enolate. E. Protonation of the carbonyl compound.
A newly isolated natural product was shown to be optically active. If a solution of 2.0 g in 10 mL of ethanol in a 50 cm tube gives rotation of +2.57 degrees, what is the specific rotation of this natural product
The pH of a 0.40 M HF(aq) solution is 1.93. Calculate the change in pH when 0.356 g of sodium fluoride is added to 50.0 mL of the solution. Ignore any change in volume.
If 10.0 mL of .300 M KOH are required to neautralize 30.0 mL of gastric juice (HCl), what is the molarity of the gastric juice?
Molarity is only one of many ways to express concentration. Another is percent mass per volume or %(m/v). For example, vinegar usually contains about 5 %(m/v) acetic acid(5g acetic acid/100 mL vinegar)
Calculate the deltaG in kJ for this reaction at 37 oC to the nearest tenth of kJ. Only include the numerical part of your answer, do not include units
What concentration should you make your stock solution of vincristine in order to make this 5uL addition?
Find the number of moles of the indicated species in (a) 6.84 g of B2O3 (b) 296 mg of Na2B4O7 10 H20 (c) 8.75 g of Mn3O4 (d) 67.4 mg of CaC2O4
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