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Using the following values answer the following: C steam=1.84 J/(g*C) C liquid=4.184 J/(g*C) C ice= 2.09 J/(g*C) Delta H vapor =40.67 kj/mol delta H fusion = 6.01 kj/mol 1. How many kilojoules of heat are required to change 50.0 grams of ice starting at -20.0 C to 50 grams of steam at 125 C. (C is Celsius)
The active ingredient in aspirin is acetylsalicylic acid (HC9H7O4) a monoprotic acid with Ka = 3.3 10-4 at 25°C. What is the pH of a solution obtained by dissolving two extra-strength aspirin tablet
a gas is placed in a balloon with a volume of 3.0L at 35C and 800 torr. What would be the new volume for the gas if placed under STP
Write a balanced chemical equation for this reaction when Ferrophosphorus reacts with pyrite making iron (ll) sulfide and a compound that is
Calculate the equilibrium concentrations if the initial concentrations are 2.31M N2 and 0.54M O2. (This N2/O2 concentration ratio is the ratio found in air.)
A proton in a linear accelerator has a de Broglie wavelength of 155 pm. what is the speed of the proton?
"Crossed" or "mixed" aldol condensations are practical for synthesis, if one of the aldehydes (or ketones) has no alpha-hydrogen atoms. Explain.
Determine the molar concentration of CH 3 COOH present in the vinegar?
how to draw mechanisms for organic chemistry? Would really like to learn how to draw them.
(a) An electroplating solution is made up of nickel(II) sulfate. How much time would it take to deposit 0.500 g of metallic nickel on a custom car part using a current of 3.00 A
Raw milk sours in 4.0 hours at 28 degrees celcius but takes 48 hours to sour in a refrigerator at 5 degrees celcius. Calculate the activation energy for the souring of milk?
The ph of 0.40 M HF(aq) is 1.93. Calculate the change in ph when 0.356 g of sodium fluoride is added to 50.0 ml of the solution .
predict the outcome of the synthesis of an azo dye using 4-nitroaniline as the diazonium precursor and benzaldhyde as the coupling agent
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