Chemistry 1A Quiz Buster 3 T1 2021

Using VSEPR, what is the structure of NH₃?

• Trigonal pyramidal

• Bent

• Trigonal bipyramidal

• Tetrahedral

Using the following diagram as a reference, what physical change is occurring when a substance at -60 °C under 10,000 kPa has its pressure increase to 200,000 kPa?

• Deposition

• Freezing

• Melting

• Sublimation

What is the main intermolecular force between water molecules?

• Hydrogen bonding

• Dispersion Forces

• Covalent

• Dipole-Dipole

The pressure of 375mL of Argon is 70kPa. What is the pressure if the volume is reduced to 250mL?

• 1430 kPa

• 22.4 kPa

• 320 kPa

• 105kPa

Which graph represents Boyle’s Law?

• Graph A

• Graph B

• Graph C

• None of the above

Which of the following is paramagnetic?

• F₂

• F₂+

• Ne₂

• He₂

The density of a gas that has a molar mass of 80g/mol under standard conditions is:

• 2.3g/L

• 1.4g/L

• 3.4g/L

• 3.6g/L

How many pi bonds are in the following molecule?

• 3

• 2

• 1

• 0

5 moles of nitrogen, 2 moles of oxygen and 1 mole of argon in a container. The total pressure is 2 atm. Assuming fixed volume and temperature, the partial pressure of nitrogen is:

• 12.5 atm

• 1.2 atm

• 1.25 atm

• 0.125 atm

Which of the following orders has the longest bond distance?

• 3

• 2

• 1.5

• 1