Equations for chemistry

Alculate the concentration of h3o⁺in a solution that contains 5.5 × 10-5m oh⁻at 25°c. identify the solution as acidic, basic, or neutral. a) 1.8 × 10-10m, basicb) 1.8 × 10-10m, acidicc) 5.5 × 10-10m, neutrald) 9.2 × 10-1m, acidice) 9.2 × 10-1m, basic

How many moles of gas are present if p=11 atm, v=12l, t=185k?

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5