Chemistry Quiz

What is the molar mass of Barium chloride? (hint: don't forget to balance charges!)

• 310.11

• 440.33

• 137.33

• 208.24

What is the formula for copper (I) oxide?

• Cu2O3

• Cu2O

• CuO2

• CuO

What is the name for the compound Na3PO4?

• Sodium phosphorus

• Sodium phosphide

• Sodium phosphite

• Sodium phosphate

What is the molar mass of Ca(OH)2?

• 72.076 g/mol

• 74.092 g/mol

• 57.085 g/mol

• 58.093 g/mol

What is the total number of atoms in 2.51 moles of argon?

• 1.51 x 10^24 atoms

• 39.948 atoms

• 100 atoms

• 6.02 x 10^23 atoms

HBr dissociates in water to give ________ ions.

A gas has a volume of 4.54 L at 1.65 atm and 75.0°C. At what pressure would the volume of the gas be increased to 5.33 L if the temperature is increased to 103°C?

• 8.21 atm

• 3.44 atm

• 1.52 atm

• 1.30 atm

About 6 grams of "Kool-Aid" crystals were dissolved completely in 100 grams of H₂O to give a tasty solution. The "Kool-Aid" crystals that dissolved would be called the:

• Reactant

• Solvent

• Product

• Solute

The equation Mg(s) + 2HCl(aq) --> MgCl₂(aq) + H₂(g) is an example of which type of reaction?

• synthesis

• decomposition

• single replacement

• double replacement

According to Boyle's Law, if the pressure of a gas increases, what would happen?

• volume would decrease

• volume would increase

• number of gas particles would disappear

• number of gas particles would increase