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Problem- What is the final temperature in a squeezed cold pack that contains 41.0g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/(g??C) for the solution, an initial temperature of 29.5?C, and no heat transfer between the cold pack and the environment.
Any expert is able to provide answer for this problem in very short time
What colligative properties are displayed by these situations.
Calculte w and delta E for the vaporization of 1.00 mol water at 100 degrees celsius and 1.00 atm pressure.
Determines the rate constant for this reaction and express and determine how many mL of a 0.157M solution of KOH is required to react with 0.385g of CH 3 COOH?
In writing a lab report, a hypothesis is needed. The experiment called for a titration HCl solution of unknown molarity with TRIS base. Bromocresol green was used as an indicator.
Draw lewis Dot structures. Use model kits, styrofoam balls and/or gum drops to make a model of the molecule or ion. Be sure to place electron groups (toothpicks or sticks) as far apart as possible.
The activation energy for a given reaction is 87 kJ/mol. What is the ratio of the rate constants for this reaction when the temperature is decreased from 37 °C to 15 °C
carbon tetrachloride reacts at high temperatures with oxygen to produce two toxic gases phosgene and chlorine.ccl4g
Using concentrations, the solubility of [Ag+] in a solution of 0.01 M KCl is 1.8 * 10-8. Calculate the percent relative error when using concentrations for the solubility of [Ag+] compared to activities
A certain first-order reaction has a rate constant of 3.40×10?3s^-1 . How long will it take for the reactant concentration to drop to 1/8 of its initial value
What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 700 mL of H2O?
What technique would you use to determine the density of approximately 5 grams samples of granular sugar at 20 degress celsius and 1 atmosphere pressure
suppose that a hypothetical element consists of a mixture of two isotopes. one isotope having mass 44 amu is present in
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