A covalent bond between two atoms occurs when the atoms

A. lose or gain electrons and become ions.

B. share pairs of electrons.

C. transfer valence electrons completely from one atom to another.

D. have an electrical attraction between them.

What gas produced from combustion of fossil fuels is causing global warming

How many moles of atoms are in 7.00 g of carbon 13 a b c d?

Which general formula represents the compound CH3CH2CHCH2? A) CnH2n + 2 B) CnH2n - 2 C) CnHn D) CnH2n

Which piece of evidence provides the strongest support for the theory that all living things evolved from a common ancestor? Charles Darwin, for 7 grade

Which of the following units is rarely, if ever, used in science labs? A. centimeter B. gram C. quart D. milliliter

Calculate the number of ATPs generated by the complete metabolic oxidation of tripalmitin (tripalmitoylglycerol). Hydrolysis of the triacylglycerol occurs at the cell surface.

If a gas is moved from a large container to a small container but its temperature and number of moles remain the same, what would happen to the pressure of the gas? It would increase. It would be halved. It would stay the same.

Which of the following would require the largest volume of 0.100 M sodium hydroxide solution for neutralization?: (A) 20.0 mL of 0.0500 M nitric acid (B) 15.0 mL of 0.0500 M hydrobromic acid (C) 5.0 mL of 0.0100 M sulfuric acid (D) 10.0 mL of 0.

Approximately what volume do 3.0 moles of kr gas occupy at stp? 80.0 40.0 l none of the above 20.0

What is the correct formula when Aluminum and Nitrogen are combined? a. Al3N b. AlN c. AlN3 d. Al2N