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A 10g sample of acetic acid HC2H3O2. was burned in a bomb calorimeter in an excess of oxygen. The temperature of the calorimeter rose from 25 C to 35.84C. If the heat capacity of the calorimeter and its contents is 13.43KJ/C, what is the enthalpy change for the reaction?
Titration of 15mL of 0.125M unknown base with 0.103M HCl required 18.2mL to reach the equivalence point. the pH at the equivalence point was 2.74.
If 75.0 mL of 0.250 M HNO3 and 75.0 mL of 0.250 M KOH are mixed, what is the molarity of the salt in the resulting solution?
For the reaction 2CH4(g) +3Cl2(g) -> 2CHCl3(l) + 3H2(g), the standard enthaly of change of reaction = -118.6KJ. The standard enthalpy of change of reaction
The reaction between solid sodium and Iron (III) oxide is one in a series of reactions that inflates an automobile airbag.
Draw the skeletal structure for major organic product produced when the arene given reacts with 2 equivalents each of Na and HOCH3.
Preparing solutions for biochemical experiments, In preparation for a protein purification experiment, you have been asked to prepare 100 mL of an aqueous solution of Tween20
Heat is lost to the styrofoam calorimeter. Assuming a 6.22 C temperature change for the reaction of HCl(aq) with NaOH(aq), calculate the heat loss to the inner 2.35-g styrofoam cup. The specific heat of styrofoam is 1.34 J/gC.
Write the reactions for the preparation of the diaonuim salt for the coupling of the salt with the sodium salt of 2-napthol.
what mass of ammonium chloride can be added to 100 grams of water at 20 degrees C before the solution becomes saturated
At what temperature will a 1.3 g sample of neon gas exert a pressure of 491 torr in a 5.9 L container?
A solution containing 100g of an unknown substance and 900g of water. The solution has a Freezing Point of -3.33*C. What is the molar mass of the substance?
From the same container under the same conditions--same temperature and initial pressure, it takes 385 s for 7.00 L of O2 gas to effuse. Calculate the molar mass (in grams/mol) of the unknown gas.
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