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How much heat does your body lose when 3.35g of sweat evaporates from your skin at 25 degrees celsius? (Assume that the sweat is only water.) The heat of vaporization of water at 25 degrees celsius is 44.0 kJ/mol.
A gas sample has an original volume of 800 ml when collected at 710 mm and 30°C. What will be the volume of the gas sample if the pressure increases to 780 mm and the temperature increases to 35°C?
How many grams of propane must be burned to provide the heat needed to melt a 75.0-g piece of bromine (at its melting point) and bring the resulting liquid to a boil (with no vapourization)? Assume a constant pressure of 1 bar and use the followin..
Determine whether each of the examples or phrases describes an essential amino acid, a nonessential amino acid, or both essential and nonessential amino acids. A table of amino acids can be found here.
reversible expansion from Pinitial=25.0 bar and Vinitial=4.50L to Pfinal=4.50 bar, (2) a single step irreversible expansion against a constant external pressure of 4.50 bar
A 3.84-mole sample of a gas is held at a temperature of 297 K and a pressure of 286 atm. Determine the volume of the gas sample.
4Al + 3O2 = 2Al2O3 determine the percent yield if 124 g Al2O3 are produced when 3.0 moles of Al are reacted
BNCT relies on the initial targeting of tumor cells by an appropriate chemical compound tagged with 10 5 B , which preferentially concentrates in tumor cells.
Paradichlorobenzene, C6H4Cl2 is a component of mothballs. A solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39 C . The boiling point of pure cyclohexane is 80.70 C. Calculate Kb for cyclohexane. Express the constant numerically in degrees C..
The osomotic pressure of this solution was 10.68 torr at 25 degrees C. What is the molecular mass of the protein?
Calculate the equilibrium concentrations of H3O^+, A^-, and HA in a 0.040 M solution of the acid, along with the pH of the solution.
A physiological saline solution contains 154mEq/L each of Na+ and Cl-. How many moles each of Na+ and Cl- are in 0.600L of the saline solution?
A 130 mL stock solution contains 1.5 M CuF2. When 13 mL of the stock solution is diluted to 25 mL, what will the concentration of F- ions be?
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