15. These muscles that the white arrows are pointing to are called:    

3. The valve labeled 16 is the:         

13. What is the universal donor blood type that can donate to all other blood types?           

1. The arrow is pointing to a:      

What is the term for a reaction that proceeds by requiring heat energy? Example: N2(g) + O2(g) + 180.5 KJ → 2NO(g)

Which of the following is categorized as homogeneous /pure/ element?

When hydrochloric acid dissolves in water, it is described as ____.

In the reaction CaCN2 + 3 H2O → CaCO3 + 2 NH3 [80.10]   [18.02]   [100.09]   [17.03] how many grams of NH3 will be produced when 25.0 g of CaCN2 react with excess water?

Name the molecule N2O4.

Which of the following free elements are diatomic molecules in nature?hydrogen, nitrogen, oxygen, fluorine, phosphorus, sulfur