What is the formula for the ionic compound formed by calcium and selenium?

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

Answer asap need by wednesday morning calculate the ph of 0.036m naoh best answer will be brainliest