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Question- Vapor volume of 1.23L forms when a sample of liquid acetonitrile, CH3CN absorbs 1.00 kJ of heat at its normal boiling point (81.6 and 1 atm).
What is ?Hvap in kilojoules per mole of CH3CN?
when measured in aa quartz cuvett of 1cm path length. What is the concentration of DNA in µg/mL?
Calculate the pH of 9.2E-8 M NaOH, ignoring activity coefficients. Report the pH using the correct number of decimal places.
Calculate the percent compostion of impure benzoic acid. The orignial weight of benzoic mixture was 4.23 g
What is the molarity of calcium hydroxide solution if the titration requires 74.70 ml of the acid to reach the endpoint?
Choose the answer in which the three atoms and/or ions are listed in order of increasing EXPECTED size (smallest particle listed first) assuming that the simple shell model of the atom is correct.
calculate the mass of oxygen in mg dissolved in a 5.00 l bucket of water exposed to a pressure of 1.13 atm of air.
At 25.0°C the rate constants for the forward and reverse reactions are 1.40 x 10-28 M-1 s-1 and 9.30 x 1010 M-1 s-1, respectively. What is the value for the equilibrium constant at 25.0°C
A student determines the molar mass of methanol. She found that the equilibrium temperature of a mixture of ice and pure water was 0.4 degrees C on her thermometer
according to the following thermochemical equation what mass of h2o in g must form in order to produce 975 kj of
Which of the following wave functions are eigen functions of the operator d^2/dx^2? If they are eigen functions what is the eigen value
The density of a sample of an unknown solid is 16.9 g/cm3. Convert this density to to units of lb/ft3.
10.2 g of ice at -4.8oC is added to 164 mL of water at 50.1oC. What is the final temperature (oC) of the mixture
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