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A nurse administered 4.90 mL of a radioisotope solution that has an activity of 155 μCi/mL . What total dose of the radioisotope did the patient receive?Express your answer to three significant figures and include the appropriate units.
Benzoic acid is much stronger than the weak acid phenol consequently benzoic acid reacts with the weak base bicarbonate while phenol does not. using a schematic show a scheme for the total separation of the three compounds in a mixture of benzoic ..
Dissolving NH4Cl(s) in water is endothermic with a heat of the solution of 15.2 kJ/mol. If a 6.134 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 24.5°C, what is the minimum temperature reached by the solution
The enthalpy of vaporization of Benzene is 33.9 kJ/mole at 298K. Explain how many liters of C6H6 (g), measured at 298 K and 95.1 mmHg, are formed when 1.54kJ of heat is absorbed by C6H6 (l) at a constant temperature of 298K.
Calculate the volume of all gases evolved by the complete oxidation of 0.380 of the amino acid alanine if the products are liquid water, nitrogen gas, and carbon dioxide gas; the total pressure is 1.02 ; and = 295.
A 0.28 mol sample of a weak acid with an unknown pKa was combined with 12.0 mL of 3.10M KOH and the resulting solution was diluted to 1.500 L.
If an electron has a mass of 9.709x10^-31 kg, and a proton has a mass of 1.672x10^-27 kg, approximately how many electrons are required to have the same mass as one proton
Problem- An aqueous solution has a normal boiling point of 103 c. What is the freezing point of his solution. For Water Kb= 0.51 C/m and Kf= 1.86 C/,
If a precision of 0.1% is required for the concentration of a solution that is 0.2M, how many significant figures must be reported
The physician has ordered 1.00 g of tetracycline to be given every 6 hours to a patient. If your stock on hand is 500 mg tablets, how many will you need for 1 day's treatment
tablets of ki were distributed to people living around chernobyl one week after the nuclear reactor explosion occurred
In lab a student titrates 50.00mL of an unknown monoprotic weak acid with 35.5mL of .9500M NaOH to reach the equivalence point of the titration. What volume of NaOH was delivered to reach the midpoint in this titration
Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell (c) What is the value of the equilibrium constant for..
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