Which are two chemicals used to purify water?

sulfur and oxygen

fluorine and sodium

bicarbonate and calcium

ozone and chlorine

How many neutrons are present in a nucleus whose atomic number is one and whose mass number is one?

The pressure of a gas results from the sum of the volumes of the particles being larger than the container volume. gas particles colliding with each other. gas particles colliding with the container walls.

Determine the empirical formula of a compound found to contain 52.11% carbon, 13.14% hydrogen, and 34.75% oxygen.

All metals have two oxidation numbers. True False

A compound known to contain only molybdenum (Mo) and oxygen (O) is found to be 67% molybdenum by mass What is the empirical formula of the compound?

Compare mechanical energy and thermal energy.

How many covalent bonds can each carbon atom form?

Hich element is likely to be the most brittle? a. selenium b. cobalt c. platinum d. zinc

What units should they have used in order to make the correct conversion

The brown solid that formed is zinc copper oxygen iron