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A man with a mass of 60 kg steps into powdery snow and sinks to his waist. The area of each man's feet is 250 centimeters squared. He put on skis, each of which has an area of 1800 centimeters squared. What pressure does each of his feet exert on the snow? What pressure does each of his skis exert on the snow? Explain why he can ski on snow and not walk on it.
Calculate the pressure that CCl4 will exert at 21°C if 1.00 mol occupies 18.2 L, assuming that CCl4 obeys the ideal-gas equation; CCl4 obeys the van der Waals equation.
Calculate the percent compostion of impure benzoic acid. The orignial weight of benzoic mixture was 4.23 g
How many grams of F- should be added to give 1.6 ppm? Fluoride is provided by hydrogen hexafluosilicate, H_2SiF_6. How many grams of H_2SiF_6 contain this much F-?
Compare and contrast the accuracy and precision of at least three types of measurements used in life
Calculate the theoretical amount of 2.5 M NaOH (10%) solution needed to convert the benzoic acid to its water-soluble salt. Is the combined volume of NaOH used in the extractions sufficient for complete deprotonation of benzoic acid
how many kilojoules are required to raise the temperature of a 150. g sample of silver from 25 degree celcius to 135
Draw the structure of the following three isomeric amides with chemical formula C6H11NO. Draw all three structures in the same window, DO NOT separate them with an arrow
Draw the most stable conformation of trans-1-isobutyl-4-methylcyclohexane in both the chair conformation and the wedge structure.
Silver chloride usually does not ppt in solution of 1.0M NH3. However AgBr has a smaller Ksp. Will AgBr ppt form a solution containing 0.01M AgNO3, 0.01M NaBr and 1.0 M NH3? Ksp = 5 x 10^-13
How long will it take for the concentration of XY to decrease to 12.5% of its intial concentration when the initial concentration is 0.100M? When the initial concentration is 0.200M?
A special gas mixture used in bacterial growth chambers contains 1.00 % by weight CO2 and 99.0 % O2. What is the partial pressure (in atmospheres) of each gas at a total pressure of 0.941 atm
Naturally occurring iodine has an atomic mass of 126.9045. A 12.3849- sample of iodine is accidentally contaminated with 1.00070 of , a synthetic radioisotope of iodine used in the treatment of certain diseases of the thyroid gland.
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