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Suppose the radius of a typical cell is 10 µm and that inside the cell 106 ATP molecules are hydrolyzed each second. What is the power density of the cell in watts per cubic meter (1 W = 1 J/s)? A computer battery delivers about 15 W and has a volume of 100 cm3. Which has the greater power density, the cell or the battery?
One of the nuclides in spent nuclear fuel is U-235 , an alpha emitter with a half-life of 703 million years. How long will take for the amount of U-235 to reach 49.0% of its initial amount
Convert a concentration of 4x10-4 M to millimol per milliliter. List the two types of co-factors required by certain enzymes.
write balanced reaction equations for the reactions involved a) when aspirin dissolves in aqueous NaHCO3 and b) when aspirin is precipitated from a sodium acetylsalicylate solution by HCl.
Assume every breath a person took is 0.5L of air, figure out how many grams of Oxygen you consume at every breath. Now assume that you breathe 30 times per second, figure out how long it took for you to consume all the oxygen in a sealed room of 1..
You have a solution that is 18.5% (v/v) methyl alcohol. If the bottle contains 2.22L of solution, what is the volume (V) in milliliters of methyl alcohol
Calculate the molarity of each of the following solutions: (a) 29.0 g of ethanol (C2H5OH) in 545 mL of solution, (b) 15.4 g of sucrose (C12H22O11) in 74.0 mL of solution.
The volume of HI(aq) required to reach the equivalence point : (c) The pH at the half-neutralization point. d)The pH at the equivalence point
the decomposition of dinitrogen pentoxide is described by the chemical equation2 n2o5g ? 4 no2g o2gif the rate of
If 5.28 x 10^3 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
A solution is prepared by adding 1.10 g of solid rm NaCl to 50.0 mL of 0.100 M {CaCl_2}. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.
A 325 mL sample of gas is initially at a pressure of 721 torr and a temperature of 32°C. If this gas is compressed to a volume of 286 mL and the pressure increases to 901 torr, what will be the new temperature of the gas (reported to three signifi..
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over the course of one year
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