CHEM 1305 Exam 2

Front

How many molecules of sucrose are in 0.500 L of a 1.00 molar solution of sucrose?

Back

3.01 × 10^23 molecules of sucrose

Front

What kind of bond forms when atoms share electrons?

Back

Covalent bond

Front

What is the bond angle in a molecule with a tetrahedral shape?

Back

109.5°

Front

How many protons, electrons, and neutrons are in 37Cl?

Back

17 protons, 17 electrons, 20 neutrons

Front

If the following generic atom were to undergo ionization, what would be the charge of the most likely product?

Back

-2

Front

Define molarity.

Back

Molarity is the number of moles of solute per liter of solution.

Front

What is the formula for calculating the number of moles from mass?

Back

Number of moles = mass (g) / molar mass (g/mol)

Front

What is the significance of Avogadro's number?

Back

Avogadro's number (6.02 × 10^23) is the number of particles in one mole of a substance.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the shape of a molecule with a linear geometry?

Back

A linear geometry has a bond angle of 180°.