Elements in the Periodic Table are arranged according to their

How many protons, neutrons and electrons are in the ion below?

All of the following molecules are polar except:

Benzene, C6H6, is a common solvent. Select the substances that are well soluble in

1. NaI
2. I2
3. margarine
4. table salt

The vapor pressure of a liquid is low at room temperature. The liquid

The dissolution of an ionic solid in water is endothermic. You have a saturated solution, which of the following changes will cause more solid to dissolve?

2 g of hydrogen fluoride (HF) is:

Molar masses: H=1.0 g/mol ; F=19 g/mol

08 g NaOH is dissolved in enough water to make 10 mL of solution. Calculate the molarity of the solution.

Molar masses: Na=23 g/mol ; O=16 g/mol ; H=1.0 g/mol

The pH of an acid solution is 3. It may be all of the following solutions except.

A 0.01 M HCl solution is diluted with water hundred times.

1. The pH of the solution increases by 2.
2. The pOH of the solution increases by 2.
3. The hydronium ion concentration of the solution decreases from10^─2 M to10^─4M
4. The hydroxide ion concentration of the solution does not change.

Choose the redox reaction

Unstable nuclei undergo radioactive decay. During alpha radiation

The IUPAC name of the following compound is:

The reaction below is classified as

Choose the compound(s) that are secondary alcohols

Acetic acid gives which of the following reactions?

How many stereoisomers does an aldopentose have in its open chain form?

Which of the following amino acids have nonpolar side chains?

Which of the following functional groups can be found in proteins?

1. amide
2. phosphodiester
3. disulfide
4. alkyne

Which of the following substances classify as lipids?

1. tryacyl glycerols
2. nucleosides
3. steroids
4. waxes