What is the term used to describe the energy needed to get a reaction started?

a. adhesion energy

c. cohesion energy

b. activation energy

d. chemical energy

Why is carbon so abundant in living things when oxygen is the most abundant element on Earth? a. Carbon atoms can bond with one another to make chains and cyclic structures whereas oxygen atoms cannot form chains or cyclic structures. b.

Which of the following element combinations will likely form monatomic ions not polyatomic ions? 1. Argon and krypton 2. Potassium and iodine 3. Carbon and nitrogen 4. Oxygen and nitrogen

I need to know about mitosis and meiosis

A pelican is born with a larger bill than other pelicans of the same species. When this pelican breeds, some of its offspring also have larger bills.

What is the charge on the hydronium ion?

6. State the number of significant digits in each of the following measurements. (a) 1.00 cm

How do you boil water less than 100

What quantum numbers specify these subshells 5s 6p 4d?

What is the molarity of sucrose if 150.0 g is dissolved in 250.0 mL of solution

What are sister chromatids