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A human typically evolves about 20kJ per kg per hour of heat mostly from the oxidation of food. The average human is 62 kg. There are about 6 billion people on the planet. In one week period explain what is the total increase in entropy of the universe coming from us humans? Explain the average temperature on earth is 293 K.
treatment of 1.385g of an unknown metal m with an excess ofaqu. hcl evolved a gas that was found to have a volume of
Consider the titration of 100.0 mL of 0.200 M acetic acid (Ka = 1.8 10-5) by 0.100 M KOH. Calculate the pH of the resulting solution after the following volumes of KOH have been added.
Explain why the mixture of alcohol does as well as sulfur powder yellow in color turns into a white mixture when added to water
The following reaction has equilibrium constant Kc=32, calculate the equilibrium concentration of CH2O if 2.50 mol of CH2O is placed in an empty 5.0 L reaction chamber.
The difference between voltages measured when 71.1 mL and 22.1 mL of AgNO3 have been added is 0.3929 V. Using this voltage difference and your answers to questions (a), (b), and (c), calculate the numerical value of the quotient Ksp,AgCl/Ksp,AgI.
ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. from 164.5degc to
if the activation energy is 55kJ/mol, determine the rate constant at 26 celcius. dinitrogen tetroxide decompses to nitrogen dioxide with a rate constant
Determine the number of grams H2 formed when 250.0 mL of 0.743 M HCl solution reacts with 3.41 x 1023 atoms of Fe according to the following reaction. 2 HCl(aq) + Fe(s) ? H2(g) + FeCl2(aq)
What is the maximum number of liters of Fe2O3(s) that can be made from 11.53 L of O2(g) and 16.07 L of FeS(s) at STP?
show work on the mineral greenockite is yellow sulfide of cadmium that is 78.0% cadmium and 22.0% sulfur. determine the empirical formula of greenockite.
Suppose HI at 5.00 10^-1 M, H2 at 1.00 x 10^-2 M, and I2 at 5.00 x 10^-3 M are mixed in a 5.0 L container. Calculate all concentrations at equilibruim.
Calculate the heat evolved when 75.0 mL of a 2.00M HCl solution reacts with 37.5 mL of a 4.00M NaOH solution if the temperature rises from 20.0 degree C to 37.9 degree
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