Typical ionic charge of a Group 6A (16) element is:

When adding 12.11 g + 0.034 g, the correct reported answer is:

Nitrogen commonly forms which simple anion?

Molar mass of NaCl is:

The formula of aluminum oxide is:

A radioisotope (t1/2 = 12.0 days) decays from 1.00 g to 0.125 g. How much time has elapsed?

Which has the highest first ionization energy?

Balance: __ BaCl2 + __ Na2SO4 → __ BaSO4 + __ NaCl

Outside of the tropics, as you move away from the equator and toward the poles, average temperatures __________ and average temperature ranges_________.

What is the plate tectonics settings for deep ocean trenches.