Which of the following is a way to practice safe science

What does x represent in the formula for the compound xcl4?

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m