1. (8.5d) A compound has a formula Mg:(PO.). Which best describes the atoms that make up this compound? A.

B.

Atom

Magnesium (Mg)

phosphorus (0)

Oxygen (0)

Number

2

1

4

Atom

Magnesium (Mg)

Phosphorus (P)

Oxygen (0)

Number

6

2

8

C.

Atom

Magnesium (M)

Phosphorus (2)

Oxygen (0)

Number

3

4

2

D.

Atom

Magnesium (Mg)

Phosphorus (P)

Oxygen (0)

Number

3

2

8

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?