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How much heat energy, is needed to convert 64.0 grams of ice at -18.0 degrees celcius to H2O at the temperature of 25.0 degrees celcius? Express your answers in kilojoules
Nicotine in cigar smoke (pH is much more readily absorped through the mucous membranes of the mouth than is nicotine in cigarette smoke pH
The activation energy of a certain reaction if 65.7kJ/mol. How many times faster will the reaction occur at 50 degrees Celsius than at 0 degrees Celsius? State the assumptions you need to make in order to perform this calculation.
An aqueous solution is made by dissolving 24.5 grams of manganese(II) chloride in 466 grams of water.
calculate the difference in mass that is hold by a 500.0mL flask at a temperature of 0.0°C from that at temperature of 20.0 °C? (you can assume the volume of the sample at 0.0 °C temperature =volume of the sample at 20.0°C)
A brand of lunchmeat contains 0.11% by mass of a preservative, sodium benzoate, C6H5COONa. Health Canada recommends a an upper level intake of Na to be 2300 mg
If 32.0 g CaC2 are consumed in this reaction, how many moles of H2O are needed?
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
Calculate the Gibbs free energy change of transformation at 286 K and 1 atm. Tin transforms from gray tin to white tin at 286 K and constant pressure of 1 atm. The following data are given for both gray and white tin:CP = 21.6 + 18.2 x 10-3 T
Decribe how adding a solution of KOH to the original sulfide precipitate results in the separation of Sn4 ion from the other group
Draw the experimental outcome for a titration analysis involving a titrant and titrand (the pH vs. volume titrant added response curve), wherein the titrand is the weak, monoprotic base aniline (0.05000 F, 0.10000 L), and the titrant is a strong m..
Why it is important that any aldehyde used in Witting reaction be free of carboxylic acid impurities?
What does a yellow flame in the Bunsen burner indicate? How can this be corrected? Why use a funnel to transfer large volume of liquid from one container to another?
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