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Define an aqueous solution contains 36% HCl by mass. How do compute the molality and mole fraction of the solution.
A flask contains 0.190 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
How much energy (in kilojoules) is required to convert 285 ml of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 ?
Calculate the density of N2 at STP, (a) using the ideal-gas law and (b) using the molar volume and molar mass of N2.
suppose you have a solution that might contain any or all of the following cations: Cu2+, Ag+, Ba2+, and Mn2+. the addition of HBr causes a precipitate to form
Compute the reactor volume and space time to get 90% conversion in a PFR and in a CSTR
How will buffer capacity change if you add 0.2 M of benzoic acid to the buffer made of 0.3 M of acetic acid
the solubility of a salt in water represents the amount of solute necessary to reach a state of equilibrium between saturated solution and undissolved
How much heat can be obtained by burning 14 pounds of propane? (Remember to look at this from the viewpoint of the surroundings, since the question asks how much heat can be OBTAINED.)
consider the unbalanced equation c5h12l o2g --gt co2g h2ol if 25.2 grams of pentane c5h12 are burned in excess oxygen
A 5.00-mL sample of a sulfuric acid solution of unknown concentration is titrated with a 0.1401 M Sodium Hydroxide solution. A volume of 5.99 mL of the base was required to reach the endpoint. What is the concentration of the unknown acid solution
calculate the amount of heat needed to boil 92g of ethanol beginning from a temperature of -69.2 c . be sure your
What would be the activation energy for the reverse reaction in the presence of a catalyst that decreased the activation energy for the forward reaction to 107 kJ/molrxn
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