A 500.0 g –sample of aqueous hydrogen peroxide (H2O2) contains 31.50 % H2O2 by mass. a. Find the mass of hydrogen peroxide in the solution.

What are transitions between a liquid and gas called? identify which way they are transitioning

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?