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Calculate the final temperature of a mixture of 100.0 g of ice initially at -16.0 degrees C and 375.0 g of water initially at 90.0 degrees C.
Determine the pH of a 0.432 M sodium acetate (NaC2H302) solutions
Assume that the kinetic energy of a 1300 kg car moving at 105 km/h could be converted entirely into heat. What amount of water could be heated from 20.°C to 64°C by the car's energy?
Determining the free ions of calcium on a similar sample of blood. recommend if the sample requires pretreatment or if it can be calculated directly In each case.
What is the molarity of that forms when 20.0 of zinc completely reacts with according to the following reaction? Assume a final volume of 285 .
What is the molality of a solution that is composed of 265 g of acetone ((CH3)2CO) dissolved in 177 g of water.
How many grams of aqueous iron bromide will be needed to react with an excess of potassium phosphate,K3PO4,to produce 17.1 g of solid iron phosphate?
If 4.00 mol of calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2), a gas used in welding, will be produced.
76 g of Cr2O3 and 27 g of Al completely react to form 51 g of Al2 O3, how many gram of Cr are formed?
Consider a certain type of nucleus that has a rate constant of 2.62 * 10^-2 min^-1. Calculate the time rquired for the sample to decay to one-fourth of its initial value.
Consider a chromatogram containing a single analyte with retention time of 4 minutes. The mobile phase elution time is 0.2 minutes. What is the capacity factor (k') for the analyte in question?
Calculate the mass of oxygen dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air
An anesthetic contains 64.9 % carbon, 13.5 % hydrogen, and 21.6 % oxygen by mass. At 120 degrees C and 750 mmHg, 1.00 L of the gaseous compound weighs 2.30 g.
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