In an experiment to find the thermal energy transfer of a material the following characteristics were found: Mass = 10 kg

Initial Temp = 20 C

Final Temp = 40 C

C = 1400 J/KgK

Calculate the thermal energy transfer for this experiment.

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.

Which of the following is not true about the atomic model of substances?