During a science lesson on rocks and minerals Mrs. Franks that passed out a simple case of rocks minerals and fossils and gemstones looking at the samples what are the three types of rocks found in the case

How to tell if a molecule is polar or nonpolar with electronegativity

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

What is offspring? why does a longer life span mean a higher chance of producing offspring?