Chemistry, 12.02.2021 08:30, brucemartineau8475
In a coffee cup calorimeter, 1.60 g NH4NO3 was mixed with 75.0 grams of water at an initial temperature of 25.00* Celsius. After the dissolution of the salt, the final temperature of the calorimeter contents was 23.34 * Celcius. Assuming the solution has a heat capacity of 4.18 J/g*C, and assuming no heat loss to the calorimeter, calculate the enthalpy of the solution for the dissolution of NH4NO3 in units of kJ/mol. Q
Answers: 1
Chemistry, 22.06.2019 00:00, annsmith66
What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17
Answers: 1
Chemistry, 22.06.2019 16:50, Pookiev
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
Answers: 1
Chemistry, 23.06.2019 10:30, lvoltin1073
When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3 2 kilopascals, what is the partial pressure of the hydrogen?
Answers: 1
In a coffee cup calorimeter, 1.60 g NH4NO3 was mixed with 75.0 grams of water at an initial temperat...
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