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A sample serum of mass 25g is cooled from 290K to 275K at a constant pressure by the extraction of 1.2J of energy as heat. Calculate q and deltaH and estimate the heat capacity of the sample.
Enough monoprotic acid is dissolved in water to generate 0.0163 M solution. The pH of the resulting solution is 6.31. Calculate the Ka of the acid.
What is the pH at the equivalence point when 0.0300 M NaF is titrated with 0.0610 M HClO4. (pKa = 3.17.)
A piece of metal that has a density of 5.2 g/cm3 and a mass of 100 g was placed in a full jar of water. How many mL of water spilled out of the jar?
a 100.0-g sample of water at 27.0 oc is poured into a 75.0-g sample of water at 89.0 oc. what will be the final
What is the formula of precipitate if 6M NaOH is added slowly to a solution containing Chromium (III)
Predict which of the compounds should undergo a more rapid reaction with potassium tert-butoxide. EXPLAIN your REASONING and give the product of the reaction?
What is the balanced equation for the formation of magnesium nitride from magnesium and nitrogen gas
how many grams of h2o g are theoretically produced from 1026.9 g of sucrose c12h22o11 g and an excess amount of
In heating an organic compound strongly with metallic sodium, one frequently observes the formation of a blck material, which is insoluble in water
Carbonyl fluoride, , is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, via the reaction
After complete combustion, a 0.4946-g sample of the compound yields 0.7092 g of CO2, 0.4355 g of H2O, and 0.3812 g of P4O10. What is the empirical formula of the compound
A titration of 50 mL of an unknown concentration of H2SO4 required 46.26mL of 0.1125 M NaOH. What is the molarity of the H2SO4 solution
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