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A beaker contains 100 grams of .90 M NaCl if you transfer 50 grams of the solution to another beaker, Explain what is the molarity of the solution remaining in the first beaker?
500.0ml of 3.00m hydrochloric acid reacts with 3.4 zg s. determine the limiting reactant and also calculate how much of
calculate the mass of urea that should be dissolved in 201 g of water at 35degc to produce a solution with a vapor
assume that while titration of vinegar sample with standard naoh takes place you misread the buret and the observed
calculate the minimum number of grams of propane that must be combusted to provide the energy necessary to convert
A fossil was analyzed and determined to have a carbon-14 level that is 46.0 that of living organisms. How old is the fossil
Calculate the pH at the point when no titrant was added and at the end point in the titration of 0.200 M potassium hydrogen maleate (abbreviated as KHM) with 0.200 M sodium hydroxide
Calculate the [H3O+] of the following polyprotic acid solution: 0.330M H3PO4 and 0.390M H2C2O4
Iodine-131 is a radioactive isotope. After 9.00 days, 46.0% of a sample of 131I remains. What is the half-life of 131I
If it takes 526 J of energy to warm 7.40 g of water by 17 °C, how much energy would be needed to warm 7.40 g of water by 55 °C?
The mole fraction of oxygen molecules in dry air is 0.2095. What volume of dry air at 1.00 atm and 25°C is required for burning 1.00 L of hexane (C6H14, density = 0.660 g/mL) completely, yielding carbon dioxide and water
What is the ratio of the number of moles of air in the heated balloon to the original number of moles of air in the balloon
what is the literature value for the Ksp of potassium hydrogen tartrate in water at 10, 22.5, 35, 50 degrees?
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