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Kales
Questions (16)
Which of the following sets of quantum numbers could possibly describe an electron in the ground-state configurations of
1 answer
1,181 views
Microwave ovens heat food by creating microwave electromagnetic radiation that is absorbed by water molecules in the food. Any
1 answer
2,326 views
Calculate the percent deviation from ideal behavior for 1.03 mol of CO2 gas in a 1.10 L container at 35.0°C, which exerts a
1 answer
631 views
A mouse is placed in a sealed chamber with air at 755.0 torr. This chamber is equipped with enough solid KOH to absorb any CO2
1 answer
2,126 views
It requires 120 J of heat to raise the temperature of 70.0 g of rhodium from 280.0 K to 287.8 K. What is the molar heat capacity
2 answers
562 views
Constant-volume calorimeters are sometimes calibrated by running a combustion reaction of known ΔE and measuring the change in
3 answers
2,624 views
A home swimming pool contains 145 m3 of water. At the beginning of the swimming season, the water must be heated from 20 to
1 answer
887 views
A piece of aluminum with mass of 5.0 g is immersed in 30.0 g of water. This system is heated electrically from 20.8 to 42.6°C.
2 answers
929 views
Solid urea, (NH2)2CO, burns to give CO2,N2, and liquid H2O. Its heat of combustion is -632.2 kJ/mol. Balance the equation for
1 answer
1,235 views
A 0.84 g sample of caffeine, C8H10N4O2, burns in a constant-volume calorimeter that has a heat capacity of 7.85 kJ/K. The
1 answer
1,248 views
A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin,
1 answer
3,221 views
A home swimming pool contains 145 m3 of water. At the beginning of the swimming season, the water must be heated from 20 to
1 answer
1,274 views
An electrical heater is used to add 20.50 kJ of heat to a constant-volume calorimeter. The temperature of the calorimeter
1 answer
1,518 views
Find the change in internal energy for this reaction. Enter in kJ. 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l)
Enthalpy of reaction=
2 answers
3,540 views
When 2.25 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 11.00oC was obtained for ΔT.
1. Calculate
2 answers
5,713 views
Match the following units to their correct property:
A. Density of Solution B. Heat Capacity C. Molarity D. Specific Heat 1.
1 answer
3,284 views
Answers (3)
The process for #2 didn't work. I got found the answer to be -1590 but I'm not sure how to get that answer
And How many joules of energy are absorbed by the water?
1.D 2.B 3.A 4.D
