What is the oxidation number for Al in Al₂O₃?

Isotopes are atoms of the same element with different numbers of

Select all that apply: Select the benefits of sexual reproduction. promotes adaptations increases genetic diversity increases chances of survival uses less energy

What is a boundary? Explain the possible ways plates can move.

How many grams of cabr2 are needed to prepare 4.65 l of a 7.65 m solution?

What happens to a system in dynamic equilibrium when it is disturbed in some way?

What is the atomic weight of a hypothetical element consisting of two isotopes, one with mass = 64.23 amu (26.0%), and one with mass = 65.32 amu? (a) 65.3 amu (b) 64.4 amu (c) 64.9 amu (d) 65.0 amu (e) 64.8 amu

Is this base a physical or chemical property?

Classify each of the following aqueous solutions as a nonelectrolyte, weak electrolyte, or strong electrolyte. a) LiClO4 b) HClO c) CH3CH2CH2OH d) HClO3 e) CuSO4 f) C12H22O11

Give examples of temporaty physical change

Which of these is a source of sediment? A. Fragments of other rocks B. Chemicals and Minerals dissolve in water C. Sea shells D. All of the above