Graphite has a specific heat of 0.709 J/(gx°C). If a 25 gram piece of graphite is cooled from 35 °C to 18 °C, how much energy was lost by the graphite?
O 620.4 kJ
O 30.1 kJ
O 319.1 kJ
O 301.3 kJ

0.09 moles of sodium sulfate in 12 ml of solution

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?