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The average person generates about 2500 kcal of heat a day. How many kilowatt-hours of energy is this? If walking briskly dissipates energy at 500 W, what fraction of the day's energy does walking one hour represent? How many kilograms of water would have to be evaporated if this were the only means of heat loss?
(The heat of vaporization of water at 35 degrees Celsius is 2400 J g^-1)
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
A hypothetical salt AxBy crystallizes in the cubic syatem. The unit cell mass has atoms of A at each corner plus on at (1/2,1/2,/1/2) and atoms of B at positions (0,1/2,1/2).
How many moles of HNO3 are present in 35.0 mL of a 4.50 M solution of nitric acid?
The organic compound called aluminon is used as a reagent to test for the presence of the aluminum ion in aqueous solution
Because the turnover number for both substrates is nearly identical, what factors might be involved that explain the different ratio for the two substrates?
What volume of a concentrated HCl solution, which is 36.0% by mass and has a density of 1.179 g/cm3, should be used to make 5.1 L of an solution with a pH of 1.5.
Ethanethiol is more soluble in water because sulfer has agreater electronegativity value than oxygen. Ethanethiol is more soluble in water because it has a lower molecular mass than 1-propanol.
If a 180 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.51.0 , what is the average thickness of the sheet in meters?
A piston has an external pressure of 11.0 atm . How much work has been done if the cylinder goes from a volume of 0.150 liters to 0.620 liters.
The equilibrium constant for a reaction at 800K is 14.2. If the enthalpy of the reaction is 30 kj/mole, what would be the equilibruim constant
Help me understand specifically why the dissociated phosphate ion would prefer to bond with cations like Al and Zn. I think I know why but help me better understand.
If the surface area of a human body is 16,100 square centimeters, what is the total weight of the atmosphere on a human body
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