5) Two people are bitten by the same type of insect. Megan gets a small pin-sized wound, while Dave quickly gets a large, red welt. The MAIN reason for the different outcomes is

If the gas in this flask is non reactive and monatomic which elements would it be

How many atoms are in Sodium, Carbon, Hydrogen, Oxygen, Fluorine, Boron, Lithium, Helium, Phosphorus and Sulfur?

State five different methods of changing the rate of a reaction

How many iron atoms are there in 2.50moles of each of the following? FeWO4?

Draw the Lewis structure for the molecule Carbon Dioxide, Co, and predict the molecular geometry.

What is the name of the scientist who discovered the electron

Which of these is not a covalent molecule? 1. F2 2. CO 3. LiF 4. NH3

Define buffer capacity. a. buffer capacity is the amount of acid or base that can be added to a buffer without destroying its effectiveness. b. buffer capacity is the amount of acid that can be added until all of the base is used up. c.

Which of the following is not a chemical reaction a) gas formation b) solid formation c) energy change d) state change

How many moles of copper are needed to react with sulfur to produce 0.25 moles Ol copper (1) sulfide according to the following reaction: 2 Cu + S + Cuzs