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a 75.0 ml sample of .0500M HCN is titrated with .500 M NaOH. what is the concentration of H+ in the solution after 3.0 ml of .500 M NaOH has been added
Converting Voltages, Convert the following voltages. Assume the silver-silver chloride and calomel reference electrodes are saturated with KCl, giving cell potentials of +0.197 V and +0.241, respectively.
how many joules of heat are needed to raise the temperature of 591 grams of water from 25C to 55C?
How much heat is required to warm 1.20 kg of sand from 26.0 0C to 100.0 0C?
An aqueous solution is six percent by mass methanol,, and has a density = 0.988 g/mL. Determine the molarity of ethanol in the solution.
CO(g)+2H2(g)->CH3OH(g) How many moles of each reactant are needed to produce 3.60 X 10^2g of CH3OH?
Iron has a density of 7.874. g/cm3. What is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000 cm by 5.000 cm?
what volume of liquid benzene must be vaporized to give that average concentration in a room
chemical potential energy from rotating turbines into thermal energy. B) electrostatic energy from rotating turbines into chemical energy
What is the mass of sodium ion circulating in the blood if the concentration of sodium ion in this individual is 0.135M.The average adult has a total blood volume of 5 liter.
the vapor leaving the top of a distillation column goes to a condenser in which either total or partial condensation takes place.
Chlorine gas can be produced commercially by passing an electric current through a concentrated solution of sodium chloride (brine).
why do we need to excess FCR? Also give 3 reasons why gallic acid is used as standard for the total phenolic assay?
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