If one person can clean a house in 5 hours and the second person can clean the same house in 4 hours, how long would will it take to clean the house if they worked together?

Where does oxidation and reduction take place in the reaction of Br2 + 2I - → 2Br + I2

The gas inside of a soda can is called what? Carbon dioxide oxygen chlorine h2o

What law did you use to solve this problem? Imagine that you fill a balloon at sea level (1.0 atm) with 18 L of air. You are taking the balloon to Denver, Colorado, for a birthday party.

Calculate the ratio of diffusion rates for neon and helium.

The volume of a gas depends upon its mass. •True •False

What device changes mechanical energy into electrical energy? Question 4 options: transformer generator copper wire light switch

Reaction rates are affected by how often the particles collide true false

A 25 N and 5 N force pull to the right. Friction is 10 N. If the object is 5 kg, find the net force and acceleration.

What properties of matter are intensive independent of their size

What is the density of an object having a mass of 8.0g and a volume of 25cm3