How are biotic factors different from abiotic factors?

What class of mineral forms when the element s is bonded with a metal, as iron in the mineral pyrite?

One of the products of a fermentation reaction is

How much of a sample remains after five half-lives have occurred?

Assuming the octet rule is obeyed, how many bonds and how many lone pairs will atoms of oxygen (o) and nitrogen (n) have in order to have formal charges of + 1?

Calculate the concentration of hydrochloric acid if 225.0 mL of this acid is neutralized by 120.0 mL of 2.0m sodium hydroxide A. 1.0m B. 1.07m C. 1.066m D. 1.1m

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?

How many moles of carbon dioxide can be produced when 3.05 of calcium carbonate are heated

Which organ system has the principal function of protection, water retention, thermoregulation, vitamin D synthesis, cutaneous sensation and nonverbal communication?