1. Aluminum has a specific heat of 0.902J/(g ∙ K) , how much heat is lost when a piece of aluminum with a mass of 28.372 g cools from a temperature of 429°C to 22.0°C.
2. A 500 g piece of iron (CP = 25.09 J/(mol · °C) changes 7°C when heat is added. How much heat energy produced this change in temperature?
3.When 300. cal of energy is lost from a 125 g object, the temperature decreases from 45.0°C to 40.0°C. What is the specific heat of this object?
Answers: 3
Chemistry, 22.06.2019 12:40
When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign
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Chemistry, 22.06.2019 16:00
Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust
Answers: 1
Chemistry, 22.06.2019 16:00
As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit
Answers: 2
1. Aluminum has a specific heat of 0.902J/(g ∙ K) , how much heat is lost when a piece of aluminum w...
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