Which of the following units of measurement would you use to describe the length of your pencil?

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

What is the mass in grams of 12.26 ml of acetone

Sodium chloride can be made as follows: 2na + cl2 ? 2nacl i calculate the maximum amount of nacl possible if 2.3 g of sodium was reacted with excess chlorine. show all your workings.