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An aqueous solution contains 12.5% NaCl by mass. What mass of water (in grams)is contained in 2.5L of the vapor above this solution at 55 celcius? the vaor pressure of pure water at 55 celcius is 118 torr.
Explain the problems that would result from the use of the equations in their present form. What modifications would you make to give accurate results when using such an unknown
Use this mass and the dilution volumes to calculate the ACTUAL molarity of the sulfuric acid in the INITIAL solution.
Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.
cobalt-60 which undergoes beta decay has a half life of 5.26 years.a. how many beta particles are emitted in 160 s by a
How long would it take for 1.50 mol of water at 100.0 C to be converted completely into steam if heat were added at a constant rate of 21.0 J/s?
The element of interest, P, was precipitated as an insoluble solid determine phosphorus content in plant food. Suppose you wanted to determine iron content in groundwater
Why does absorbance vs concentration calibration curve need not pass through origin (0,0) looking at beer lambert law?
reaction takes place in acidic solution, \rm H_2O{(l)} and \rm H^+{(aq)} will be involved in the reaction. Places for these species are indicated by the blanks in the following restatement of the equation
Calculate the pH at 25 degree C of .25 aqueous solution of phosphoric acid (H3PO4). (Ka1,Ka2, and Ka3 for H3PO4 are 7.5x10^-3, 6.25x10^-8 and 4.8X10^-13
the instrument response S for each of the five solutions, measured with a colorimeter, was found to be 0.240, 0.437, 0.621, 0.809, and 1.009, respectively. What was the concentration of Fe3+ in the water sample?
The rate constant for the second- order reaction.starting with a concentration of 0.86m, calculate the concentration of NOBr after 57s.
electrons are ejected with a kinetic energy of 3.54x10^-19 J. What is the work function of the metal in joules?
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