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Explain what is the mole fraction of solute and the molal concentration for an aqueous solution that is 10.0% NaOH by mass?
Why are the steps of scientific methods are not always used in the same order in every investigation
Determine the change in Ssys for the process if specific heat capacity for ethanol = 2.42 J/g K. express your answer in units of J/K
prepare 10 ml of solution that represents a 4 fold dilution of the stock solution
many biochemical reactions are catalyzed by large protein molecules called enzymes. a typical mechanism for the
A system has four energy levels. The degeneracies of these energy levels are as follows: g0 = 3, g1 = 2, g2 = 1, g3 = 4. For 20 gas molecules, at T = 0 K, how many molecules are in the first excited state
Ammonia decomposes totally to hydrogen and nitrogen gas. If the total pressure of the reaction vessel at the end of the reaction is 250 mm Hg, explain what is the partial pressure of nitrogen gas
if 4.3 ml of benzaldehyde are mixed with 1.6 ml of acetone, then calculate the theoretcial yield of dibenzalacetone in grams
Determine the amount of work that must be supplied to the compressor and the temperature of the gas leaving the compressor b) Determine the heat load on the heat exchanger
The reaction of aluminum with hydrocholoric acid can be shown as follows : 2AI(s) + 6 HCI(aq) --> 2AICI3(aq) + 3H2(g). How many mole of aluminum are needed to react with 1.16 mol of hyrocholoric acid
How many milliliters of a 0.20 M glucose C6H12O6 solution are needed to provide a total of 25.0 g of glucose?
consider the following mixtures. in each case either calculate the pH if the resulting solution is a buffer solution or state why the solution does
in the first 14.0 of the reaction 1.9times10?2 of is produced in a reaction vessel with a volume of 0.470. what is the
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