The three conditions that encourage the presence of marine life in the ocean are proximity to land, water depth and

a.) exposure to sunlight

b.) exposure to seasonal changes

c.) exposure to human activity

d.) exposure to moonlight

What does standard deviation reveal about data? a. the average of all the data points b. which of the data points is most reliable c. how spread out the data points are d. the percent error included in the data

Which is true of the reactants in this displacement reaction? fe + 2hcl fecl2 + h2 a. the reactants are located to the left of the arrow in the chemical equation. b. the reactants contain 1 iron atom, 2 hydrogen atoms, and 1 chlorine atom. c. the reactants are the atoms, molecules, or compounds formed in the reaction. d. the reactants have the same physical and chemical properties as the products.

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture