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an athelete is given 100 g glucose of energy equivalent to 1560 kj. He uses 50 % of this gained energy in an event . in order to avoid storage of energy in body . calculate the weight of water he would need to perspire . enthalpy of H2O for evaporation is 44 kj /mol
What is the difference between a hypothesis and a theory? a hypothesis is a proposal that has been tested extensively, whereas a theory is an initialy stated proposal a hypothesis is a conclusion made after a theory was tested words hypothesis
as the wavelength of the light increases the frequency _____? as the wavelength of the light increases the photon energy ___?
Which of the following factors affect the resolution (separation) of two compounds: (A) nature of the stationary phase; (B) eluent composition; (C) amount of sorbent used; (D) color of compounds being separated?
Choose the selection which correctly identifies the forces which must be overcome to convert SbF5 from a liquid to a gas. Only London dispersion forces must be overcome.
A solution containing 29.85 mg of an unknown protein per 25.5 mL solution was found to have an osmotic pressure of 3.85 torr at 21C
The subsequent molecules are named incorrectly. Based on the names provided, find out the correct names of these molecules and explain reasoning.
What would be the hybridization for a molecule with a central atom that is bonded to 5 peripheral atoms and that has 3 nonbonding valence
What is the volume of the balloon?
Considering the mixture of the two compounds and range of the melting points, the reason recrystallization was difficult was due to a broad melting point range.
Calculate [Cr^3+] in eequilibrium with Cr(OH)4- when 0.010 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at pH 10.0
At a certain temperature, the equilibrium mixture of the reaction PCl5 (g) ? PCl3 + Cl2 (g) has PCl5 = 1.50 atm. PCl3 = 0.10 atm and PCl2 = 7.50 atm Calculate the value of Kp at this temperature
Acetic Acid has a Ka of 1.8 X 10^-5 What is the pH of a buffer solution containing 0.17 M hC2H3O2 (acetic acid) and 0.18 M C2H3O2- Express answer using two decimal places.
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