Determine the pressure of the oxygen in the tank
If the pressure of the helium is 44.0 torr, and the nitrogen 615 torr, determine the pressure of the oxygen in the tank? A diver's scuba tank contains a mixture of nitrogen, oxygen and helium at a total pressure of 785.torr.
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If this sample is titrated with acid, it is found that 20.10 mL of0.5010 M HCl are required to reach the endpoint. A sample of mixed carbonates, SrCO3 (147.63 g/mol) and Li2CO3 (73.89 g/mol), weighed 0.5310 grams.
Assume that for the dose of 10 milligrams, amount A(t) remaining in body t hours later is provided by A(t)=10(0.8)t and that for drug to be effective.
A sample containing potassium chloride and inert material was analyzed by the Mohr method. A portion of the solid weighing 0.2500g was dissolved and titrated with the 0.07575 M AgNO3 solution to a brick-red silver chromate end point.
A light bulb at art museum has expected life of 500 hours and standard deviation of 6 hours. Employ Chebychev's Inequality to determine the probability that one of these light bulbs will last between 480 and 520 hours of use.
A handball of 0.060 kg is thrown straight in the direction of a wall having a speed of 10 m/s. It rebounds straight backward at a speed of 9.2 m/s. (i) Determine what impulse is applied on the wall?
Assuming that a sugar-coated cereal contains 23.0% sugar and no other energy source, what mass of cereal will provide enough energy to walk the 2.0 km?
Let, consider a motorcycle as it travels close to the bottom of a loop. If it is at the bottom, the normal force on the motor cycle is three times its weight. When the speed of the motorcycle is 20m/s, determine the radius of curvature of the trac
Calculate the pH and OH- ion molar concentrations when the molar concentration of concentrated hydrochloric acid is12.1M.
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