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At the end of 2009, global population was about 6.8 billion people. What mass of glucose in kg would be needed to provide 1600Cal/person/day of nourishment to the global population for one year? Assume that glucose is metabolized entirely to CO2 (g) and H2O (l) according to the following thermochemical equation:C6 H12O6 (s) + 6O2 (g)-->CO2 (g) + 6H2 O(l)quad H = - 2803kJ
Acetylene, C2H2, is a gas commonly used in welding. It is formed in the reaction of calcium carbide, CaC2, with water. Given the thermochemical equations, calculate the value of ?H°f for acetylene in units of kilojoules per mole.
Larger molecules of hydrocarbons are broken into two or more smaller hydrocarbon molecules by a process known as
Which of the following would be expected to have the lowest freezing temperature?
A particular first-order reaction has a rate constant of 1.35x10^2 at 20 degrees C . What is the magnitude of k at 75 degrees C if Ea =85.6Kj/mol?
How many moles of H+ (H3O+) are produced in 40.0 m of 0.025 M HCL?
0,245g of the carbonate was found to exactly neutralise 23,6cm3 of HCl with a concentration of 0,150 mol/dm3.
Write a Lewis structure for each of the following molecules.
What is the minimum quantity (in grams) of atmospheric oxygen required to completely convert 3.77 moles of ethanol into carbon dioxide and water
A liquid placed in a closed container will evaporate until equilibrium is reached. At equilibrium, which of the following statements is false. The partial pressure exerted by the vapor molecules is called the vapor pressure of the liquid.
A closed vessel contains moist air at 20 degree celcius, the relative humidity being 30 %. What would be the relative humidity become if the vessel were cooled to 10 degree celcius?
Air is a mixture of N2,O2,Ar,Co2,Ne,He,CH4,lessor amounts of the other gases and possibly substantial amount of H2O in vapor form.
In the synthesis of t-butyl chloride from t-butyl alcohol, what is the purpose of using concentrated HCl instead of dilute HCl
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