When a molecule of nad + gains a hydrogen atom, the molecule becomes reduced.

a. True

b. False?

Chemical reactions - a. produce new substances. b. create and destroy atoms. c. occur only in living organisms. d. only occur outside living organisms.

8.84 g of a compound is analyzed and found to contain 3.53 g of C, 0.295 g of H, 4.08 g of N, and 0.935 g of O. Which of the following could be the molecular formula for this compound? C5H10N3O3 1. C10H10N10O2 2. C2H4N6O 3. C8H8N8O4 4. C4H8N6O2

In a cup of salt water, what is the solvent? what is the solute?

What is a chemically active atom?

Which of these equations is balanced? (neither and both are an option) a. 3 H2SO4 + 2Al → Al2 (SO4) 3 + 3H2 b. 2KCl + Pb (NO3) 2 → 2KNO3 + PbCl2

Which element has the lowest electronegativity? Calcium (Ca) Gallium (Ga) Selenium (Se) Bromine (Br)

Which of the following organs are found in the circulatory system? * A.) Heart B.) Veins C.) Arteries D.) Capillaries E.) All of the above

What's the difference between volcano and vent

A marshmallow has an initial volume of 0.084 L at standard pressure (1.0 atm). If the marshmallow is placed in a vacuum chamber and the final volume is 0.785L, what is the pressure inside the chamber?

Can you think of another example of energy doing work fill out the table below with your idea