Lewis Dot structure is a representation of how electrons are arranged in a molecule. To correctly draw lewis dot structures we need to...

The only two elements in alkenes and alkynes are (1) carbon and nitrogen (2) carbon and hydrogen (3) oxygen and nitrogen (4) oxygen and...

Intermolecular forces are forces of attraction between molecules. These forces influence properties of substances such as boiling and...

What is the chemical name of the compound NH4SCN? (1) ammonium thiocyanate (2) ammonium cyanide (3) nitrogen hydrogen cyanide (4)...

Which electron configuration represents the electrons in an atom of sulfur in an excited state? (1) 2 – 8 – 6 (2) 2 – 7 – 7 (3) 2 – 8 – 7...

What is the color of bromcresol green indicator in a solution with a pH value of 2.0? (1) blue (2) green (3) red (4) yellow Answer:...

To convert grams to moles and vice versa, we must always use Molar Mass. Molar Mass can be calculated using the Periodic Table. To...

Lactic acid has one acidic hydrogen. A 0.1 M solution of lactic acid has a pH of 2.44. Calculate Ka for lactic acid? When we do acid/base...

Which notations represent atoms that have the same number of protons but a different number of neutrons? (1) H-3 and He-3 (2) S-32 and...

A sample of the male sex hormone testosterone,C19H28O2, contains 3.88 * 10^21 hydrogen atoms. (a) How many atoms of carbon does it...