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In what volume ratio should you mix 1.0M solutions of NH4Cl andNH3 to produce a buffer solution having pH = 9.80?
describe an experiment using only hot and cold water that would allow you to verify that the heat capacity of your coffee-cup calorimeter
The half-life of tritium (31H) is 12.3 years. If 55.0 mg of tritium is released from a nuclear power plant during the course of a mishap, what mass of the nuclide will remain after 49.2 years?
How much heat energy, in kilojoules, is required to convert 73.0 g of ice at -18.0 0C to water at 25.0 0C ?
You collected a tissue specimen that you would like to preserve by freeze drying. To ensure the integrity of the specimen, the temperature should not exceed -10.5C. The vapor pressure of ice at 273.16K is 611 Pa
SrCO3 is a sparingly soluble salt. Using the Ksp from the appendix, a) Determine the concentrations Sr2+ and CO32- when SrCO3 is dissolved in pure water ignoring secondary reactions of Sr2+ and CO32-
How many grams of cholesterol does a person with a blood volume of 4.60 L have circulating in his or her blood?
Of sublimation, recrystallization, distillation, and extraction, which purifications methods should be used to purify the following: a) a crude solid mixture that is 90% pure
The complete combustion of pentane releases 243 kj on the basis of this information calculate the value of delta H for the complete combustion of one mole of pentane
Consider a heat engine operating between 1200 K (TH) and 400 K (TC), What if we combust 1 liter of ethane to supply qh, how much work would we expect
The qualitative analysis scheme contains a vast array of reactions involving precipitation, formation of coordination complexes and oxidation-reduction. Identify each of the following as primarily one of the above kinds of reaction.
Calculate the molar solubility of AgCl in a solution made by dissolving 10.0 g of CaCl2 in 6.00 L of solution
Calculate the mass defect and nuclear binding energy per nucleon of the each of the nuclides indicated below. A)Ti -48 (atomic mass = 47.947947 amu) mass defect = ______amu and Binding energy nucleon = ______MeV/nucleon
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