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Question: A person ate 0.941 pound of cheese (an energy intake of 7530 kJ). Suppose that none of the energy was stored in his body. What mass (in grams) of water would he need to perspire in order to maintain his original temperature? (It takes 44.0 kJ to vaporize 1 mole of water.)
Write lewis structure for these species, including all resonance forms, and show formal charges: CH2NO2- The formal charge of N=1 and the formal charge of O=-2.
What volume of concentrated HCl is necessary to completely neutralize the 10 mL of 1.5 M NaOH used?
Calcium carbonate reacts with dilute hydrochloric acid to produce the gas carbon dioxide. Write a symbol equation for the reaction.
explain why some substances are soluble in water and some are not. respond to the statement like dissolves like. give
How much heat (in ) is required to warm 12.0 g of ice, initially at -11.0 degrees C, to steam at 111.0 degrees C? The heat capacity of ice is 2.09 and that of steam is 2.01 J/gC.
the rate constant for the first order decomposition of a compound a in the reaction 2ap is k 2.7810-7s at 25oc. what is
What mass of liquid water at room temperature (25 C) can be raised to its boiling point with the addition of 31.0 kJ of energy
Which choice lists two health effects expected from the depletion of the ozone layer. asthma lung cancer skin cancer cataracts emphysema 1 and 5 2 and 3 3 and 5 3 and 4 4 and 5
An enzyme-catalyzed reaction produces a product that has a maximum absorbance at 412 nm. The extinction coefficient is 4000 M-1 cm-1. A 10/1 dilution of the enzyme is made and 20 mL of the dilution are put into a cuvette with 80 mL of water and 1...
find the mass of barium metal(in grams) that must react with O_2 to produce enough barium oxide to prepare 1.0L of a 0.10M solution of OH^-
A salt water mixture is 33.0% (w/w) walt. (The w/w refers to weight / weight or mass / mass). If there are 300.0 g salt in the mixture, what is the total weight of the mixture?
Briefly explain which indicator, bromocresol purple (pKa = 6.3; from yellow to purple) or thymolphthalein (pKa= 10.0; from colourless to blue), would be better for use in this titration
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