In which era did the first fish appear?

a. Carboniferous

b. Paleozoic

C. Mesozoic

d. Permian

What is the electron configuration of the Flouride ion (F-)

Calculate %ic of the interatomic bonds for the intermetallic compound al6mn.

What is the most likely reason that nonmetals are electrical insulators?

What do you think caused the balloon to expand

As you move across the period on the periodic table what pattern can be described about the electron configurations?

Provide an explanation at the subatomic level to explain why different colors are observed for different metal salts.

Indicate whether the following statements describe the primary, secondary, tertiary, or quaternary protein structure. (More than one can apply). A. R groups interact to form disulfide bonds or ionic bonds. B.

Equal masses (in grams) of hydrogen gas and oxygen gas are reacted to form water. Which substance is limiting? a. Oxygen gas is limiting b. Hydrogen gas is limiting. c. Water is limiting. d. Nothing is limiting. e.

Many things can cause an organism to become extinct. Here are some possible causes of extinction. Select the human causes of extinction.

Which word equation shows lithium oxide being formed from the reaction between oxygen and lithium? oxygen + lithium oxide Right arrow. Lithium lithium + oxygen Right arrow. Lithium oxide oxygen + lithium Right arrow.