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Calculate the amount of heat liberated (in kJ) from 405 g of mercury when it cools from 94.0°C to 14.0°C.
The activation energy for the following reaction is 60. kJ/mol. Sn2+ + 2Co3+ → Sn4+ + 2Co2+
A 493 mL sample of solution contains 33.2 g of CaCl2 Calculate the molar concentration of Cl in this solution
What volume of a concentrated { HCl} solution, which is 36.0% { HCl} by mass and has a density of 1.179 {g/mL}, should be used to make 5.30L of an {HCl} solution with a {pH} of 1.7.
Draw all possible isomers for the molecule having the formula C7H7C1. The molecule contains one benzene ring.
A 100.0-mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. What is the pH of the solution after 100.00 mL of acid have been added to the ammonia solution?Kb = 1.8 × 10-5.
Nitration of chlorobenzene (C6H5Cl) occurs- faster than nitration of benzene and gives a mixture containing mostly o-and p-chlorobenzene
At 25 ºC, the vapor pressure of water is 23.8 torr. What is the vapor pressure of a solution prepared by dissolving 97.0 g of C6H12O6 (a nonvolatile solute) in 170 g of water.
What is the partial pressure of hydrogen and nitrogen when the gas mixture is composed of 8.00 g hydrogen and 56 grams nitrogen.
Compute the expected change in temperature for 1.7 grams of ammonium nitrate NH 4 NO 3 dissolved in 50.0 mili litres of water H 2 O.
A mixture of CaCO3 and CaO weighing 0.665 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.500 g.
If 28mL of 7.0M Sulphuric acid(H2SO4) was spilled, then determine what is the minimum mass of NaHCO3 (Sodium bicarbonate or sodium hydrogen carbonate)
What is the pH of 10 drops of triethylamine in a dropperful of demineralized water? How does the reaction between triethylamine and water explain the measurement of the pH?
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