Why do people make mixtures

Which of the following would increase the pressure of a gas? A. Taking a breath of air B. Letting air out of an air mattress C. Lying on an air mattress D. Throwing a balloon into the air

What could go wrong in a science lab?

Consider the balanced equation below PCl3 + Cl2 - - > PCl5 What is the mole ratio of PCl3 to PCl5? 1:1 2:1 3:5 5:3

What's is the percent composition by mass of oxygen in magnesium oxide, Mg0

How many particles does MgCO3 present

A gas has a volume of 5.0 L at a pressure of 50 KPa. What happens to the volume when the pressure is increased to 125?

What is the molar mass of Fe2Br3? 1.35 x 10^2 g/mole 3.27 x 10^2 g/mole 3.51 x 10^2 g/mole 8.14 x 10^2 g/mole

A gas with a volume of 5.0 L at a pressure of 215 kPa is allowed to expand to a volume of 14.0 L. What is the pressure in the container if the temperature remains constant?

Sunita carries out an experiment to investigate diffusion. She uses water and a food dye to find out how the volume of water used affects the time the dye takes to spread evenly through the water.

How are coefficients used to balance chemical equations?