What is an example of convection in earths systems

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

What’s #16 asking me and how do i solve it?