Pyrite is a mineral which is made from iron and sulfur atoms. Choose all of the statements which are correct. (Pick more than one)

A. The smallest unit of pyrite is a sulfur or iron atom.

B. The smallest unit of pyrite is a molecule containing iron and sulfur.

C. All of the above.

D. The element called sulfur is made of sulfur atoms.

(Please hurry I have been stuck on this question for an hour)

Always use significant figure rules. remember that these rules apply to all numbers that are measurements. a car travels 6 miles north, 3 miles east, and then 2 miles south. what is the distance traveled? a.7 b.11

Every compound can be represented by a chemical formula. a chemical formula is the set of symbols showing the elements that make up a compound and their proportions. water’s chemical formula is h 2 2 o. that means a molecule of water contains two atoms of hydrogen and one atom of oxygen chemically bonded. a molecule is a group of two or more atoms bonded together. molecules can range in size from two to thousands of atoms. a molecule of a compound is the smallest unit of that compound. every molecule of water has all the physical and chemical properties of water. that’s because every molecule of water is made of the same elements in the same proportions: two hydrogen atoms and one oxygen! which of the following is a true statement? a every molecule of the same compound will have different properties. b every molecule of a compound has the same proportion of elements. c molecules can be physically separated into smaller units of a compound. d molecules cannot be represented by chemical formulae.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?