Identify the elements in the second, third, fourth, and fifth periods that have the same number of highest-energy-level electrons as barium.

Given a 4% starch solution and a 10% starch solution separated by a semipermeable membrane. which starch solution will decrease in volume as osmosis occurs?

Describe one way lack of water affect cell function

0.44 mL/min to microliters per second

A covalent bond occurs when: a. Two nonmetal elements share electrons to fill octets b. An element becomes stable by transferring electrons C. Two metal elements share electrons d. none of these

Which has the greater concentration of hydrogen ions, a substance with a pH of 5 or a substance with a pH of 4?

A solution of potassium cyanide, KCN, is made by dissolving 3.2 g of KCN in water. When this solution reacts with excess hydrochloric acid, HCl, it produces 0.30 g of poisonous hydrogen cyanide gas, HCN.

When carbon undergoes sp2 hybridization it forms

Give the formula for molarity

A 54-gram sample of an unknown material has a volume equal to 20 cm3. Based on its density, could the sample be aluminum? Explain

What type of reaction takes place when atoms or molecules rearrange to form new substances?