What are the four elements that make up 96% of all living matter?

Determine if the following statements are true or false. If a statement is false correct it so that it is true. a. in nature the direction of the transfer heat energy is always from a hotter object to colder object b.

How many grams is 3.2 moles of water

How many grams of CO2 are in 2.1 mol of the compound? a) 21.0g c) 66.0g

2. What type of bond holds together nitrogen atoms? a. Single Bond b. Double Bond c. Triple Bond d. no bonds hold nitrogen together

The areas on the surface of the sun that are exploding and releasing huge amounts of energy called what?

What are the forces that create electromagnetism?

The nose is an organ that acts as an airway for oxygen to enter the body. The nose also contains hairs that trap small foreign objects and stop them from entering the body. Which two systems does the nose play a role in? A. respiratory and immune B.

HBr + Mg (OH) 2 MgBr2 + H2O

What is the ability of a substance to be pulled into a wire? A malleability B ductility C conductivity D solubility

When a counterfeit detection pen is used on an authentic bill, what color does it turn? a. Pale blue b. Pale yellow c. Blue-black d. Pale pink