3)

Atoms of which two elements have a combined total of 23 protons?

A) Sodium, Na, and magnesium, Mg

B) Boron, B, and carbon, C

C) Copper, Cu, and zinc, Zn

D) None of these

What is the standard heat of reaction for the formation of NO2 (g) from NO (g) and O2 (g) ? Write the balanced equation first.

Why do you think the location surrounding the pacific ocean is known as the ring of fire

Which of these substances contributes to soap's slippery texture? O an acid O a base O carbonate O water

An insect on a dead body completes a lifecycle. In what order does this lifecycle happen? A) Lays eggs, 1st Instar Larva, 2nd Instar Larva, 3rd Instar Larva, Pupa B) 1st Instar Larva, 2nd Instar Larva, 3rd Instar Larva, lays eggs, pupa Eliminate C)

Water is unusual because it expands as it freezes, Very few substances have this property. The reason liquid water is more dense then ice can be best explained by?

how do we know isotopes exist?

Is albinism a dominant or recessive trait

If T = dominant, and t = recessive, what would the genotypes be?

What problem would unlimited cell growth pose for a cell

Complete the following analogy. Homogeneous is to soluble particles as heterogeneous is to A. solute particles. B. solvent particles. C. insoluble particles.