Intrusive igneous rocks form?

Examine the statements. A - Oppositely charged ions attract. B - Atoms donate and receive electrons. C - Charges of ions balance one another. D - Anions and cations are formed.

What percentage of solar radiation striking a plant is converted into chemical energy?

A sample of sodium chloride (NaCl) has 15.2 moles. How many atoms of sodium chloride are in the sample?

What is the answer to the main Idea for The cell Theory

Diffusion is the movement of a substance a. only through the lipid bilayer. b. only in liquids. c. only in air. d. from an area of high concentration to an area of low concentration.

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?

What ecosystem is being described in the passage?

In the enzyme reaction above, catechol is the substrate, oxygen is a reactant, catechol oxidase is the enzyme, benzoquinone is the product, and water (H2O) is a by-product. Which of the following will decrease the rate of this reaction? a.

How do acids and bases affect the quality of freshwater sources?