3) calculate the mass of 0.750 mole of c2h6o.
4) how many formula units are there in 5.4 g of nacl?
5) how many moles are there in 50.0 g of caco3?

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Fossil fuels are organic compounds that are made from