A substance that undergoes a change in a chemical reaction is

a. a product.

c. a reactant.

b. a chemical.

d. an enzyme.

Z=3 1s2 express answer as an ion

When will the population of prey increase greatly? A) when the population of predators is low B) when the population of predators is moderate C) when the population of predators is high D) when the population of predators swells E) when the

Different between percent abundance and relative abundance and what happens when you total individual percent abundances and individual relative abundances?

In a DNA sample, 15% of the bases are thymine (T). What percentage of the bases in this sample are cytosine (C) ? A. 15% B. 30% C. 35% D. 85%

Why must the line of origin be drawn in pencil instead of pen on the chromatography strip?

Which of the following phases of matter takes the shape of its container and has definite volume? Question 1 options: plasma solid gas liquid

If you breathe normally you have about 0.11 moles of air in your lungs and a volume of 2.4 L. If you then take a deep breath all the way, you will have 0.27 moles of air in your lungs. How big will your lungs be?

What's the isotopic symbol for sodium

Which of the following would likely be part of an ionic bond? Choose all that apply. A. K+1 B. Cl2 C. F-1 D. Ne

Freud argued that a person was more likely to commit crime when what part of the personality wasn't fully developed?