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an athelete takes 20 breaths p er minute at room temperature. the air inhaled in each breath is 200 ml .which contains 20 % oxygen by volume , while exhaled air contains 10 % oxygen by volume . assuming that all the oxygen consumed if used for converting glucose into CO2 and H2O ( l ), how much glucose wii be burnt in the body in one hr and what is the heat produced? room temperature =27 oc and enthalpy of combustion of glucose = - 2822.5 kj /mol at 20 oc
Question- The oxidation number of O is usually -2. Because magnesium oxide is a neutral compound, what must the oxidation number of Mg in this compound be
A perfect gas has a constant volume molar heat capacity of CV,m = 1.5× R, and a constant pressure molar heat capacity of Cp,m = 2.5× R. For the process of heating 4.50 mol of this gas with a 12 W heater for 400 seconds, calculate
Write the expression for the equilibrium constant, Kb, for methylamine also compute the molar concentration of OH- in the 50.0 mL sample of the CH 3 NH 2 solution.
Does each of the following statements describe a simple enzyme or an enzyme that requires a co factor
Using the molar ratio, determine how many liters of 0.180M lead (II) nitrate are required to react completely with 0.08 L of 0.130 M manganese (IV) chloride. Show work. (Superscripts= X^2, subscripts= X_2). Make sure to use the correct units.
a reaction mixture initially contains 0.56 atm co2 and 0.32 atm co. determine the equilibrium pressure of each gas if
calculate the change in enthalpy when 52.0 g of solid chromium at 25 degrees celcius and 1 atm pressure is oxidized.
calculate the amount of heat required to completely sublime 15.0 of solid dry ice at its sublimation temperature. the
What is the molarity of a solution prepared by dissolving 10.5 grams of NaF in enough water to produce 750 mL of solution
The activation energy for a given reaction is kJ/mol. What is the ratio of the rate constants for this reaction when the temperature is decreased
Draw the structure of the organic product(s) of the Grignard reaction between methyl formate and excess ethylmagnesium bromide, followed by aqueous workup
A section of membrane with an aquaporin (AQP) has a water transport rate of about 3 billion water molecules per second (3 × 109 molecules·s-1).
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