How can you tell that a precipitate has formed?

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius

Which three statements represent the benefits of performing experiments using computer simulations?

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