If 0.25 moles of sodium bromide is dissolved in
enough water to make 0.75 liters of solution,
what is the concentration?

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

What natural processes produce large quantities of co2