Is oxygen gas (O2) a compound or an element? Is hydrogen gas (H2) a compound or an element?

What is a materials ability to be dissolved in a solvent

Which conversion factor is the correct on the use? 1 mole/6.02 x 1023 molecules or 6.02 x 1023 molecules / 1 mole

If an exothermic chemical reaction occurs, the surroundings become warmer. Where does this energy come from?

What are chemical compounds?

Calculate the density of propanol c3h8o if you know that there are 1.069*1025 molecules of propanol in 1.35 l.

An aqueous solution is made from a molecular compound rather than from an ionic compound. If some ions are present in solution, which best describes the solute? A. a weak electrolyte B. a nonelectrolyte C. a strong electrolyte D.

Which of the following measures the radiation given off by atoms per second?

What is the name of the outermost layer that forms a boundary around the outside of each cell

What does an ionic compound form?

How many electrons in an atom could have these sets of quantum numbers n=7 l=3 ml=-1?