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A 60.0 kg mountain climber makes a vertical climb of 2000. m in 5.90 h. From a chemical analysis of the urine samples collected during the climb, it is found that 2.00 × 10-2 kg of water-free protein is catabolized. Assuming a 25.0% muscle energy conversion efficiency, find
a. The percentage of the total energy need for the climb that came from protein and the percentage that came from fat.
b. The mass of natural (wet) fat catabolized (i.e., consumed) during the climb.
Consider the titration of a 23.0?mL sample of 0.110M HC2H3O2 with 0.120M NaOH. Determine each of the following.
volume of 20.0 mL of a 0.190 M HNO3 solution is titrated with 0.550 M KOH. Calculate the volume of KOH required to reach the equivalence point.
Calculate the pH at the equivalence point for the titration of 0.130 M methylamine (CH3NH2) with 0.130 M HCl. The Kb of methylamine is 5.0× 10-4.
100.0 ml of 0.100 M acetic acid is placed in a flask and is titrated with 0.100 M sodium hydroxide. An appropriate indicator is used. Ka for acetic acit is 1.7 x 10^-5. Calculate the pH in the flask at the following points in the titration.
Depict the structure of the following compound: mer-cis-triaquadicarbonylchloridoiridium (III) perchlorate
Consider the following cell: Pt|H2(g, 0.645 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.20 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion con..
A titration was performed on 10 ml of unknown weak acid. NaOH was titrated with it. The NaOH concentration was 0.09445. The second equivalence point was at 18.85 and the first at 9.42. If the acid is 8.10279 g/L what is the molar mass
What is the minimum amount of energy from the sun required to produce 5 g of glucose in this way? ?Hf of glucose is -1260 kJ/mol.
The nuclide Pb-210 undergoes three successive decays (beta, alpha, and beta, respectively) to form a stable nuclide. What are the three nuclides which form from Pb-210 in this decay series
the trianglehfus of ethanol c2h5oh is 4.60kjmol. how many kilojoules are required to melt 24.5grams of ethanol at its
To change the equilibrium constant from Kp to Kc, the value of RT at room temp. (25'C) you would have use is:
The molar heat capacity of NH3 (g) at constant pressure in J•mol-1•K-1= 29.75 + 25.1 x 10-3T - 1.55 x 105/T2, where T is the absolute temperature. What is the molar heat capacity at constant pressure at 298K and at 1000 K? What is the maximum value o..
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