Which of the following is not present in an atom?
electron
element
neutron
proton

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?

How does a large body of water, such as the ocean, influence climate?