Chemistry Past Questions and Answers

A gas sample with an initial volume of 3.25 dm³ is heated and allowed to expand to 9.75 dm³ at constant pressure. What is the ratio of the final absolute temperature to the initial absolute temperature?

Two cylinders A and B each contains 30 cm³ of
oxygen and nitrogen respectively at the same temperature and pressure. If there are 5.0 moles of nitrogen, then the mass of oxygen is?

A liquid begins to boil when?

A particle that contains 8 proton, 9 neutrons and 7 electrons could be written as?

In the oil drop experiment, Millikan determined the?