Chemistry Knowledge Check

Front

What is the formula for chromium (III) oxide?

Back

Cr₂O₃

Front

If a gas in a 4 L container has the pressure of 2 atm, what is the new pressure of the container if the volume is now 1 L?

Back

8 atm

Front

How many grams of NaCl do you have if you have 5 moles? (Mass of NaCl is 58.44 g/mol)

Back

292.2 grams

Front

If a solution has a pOH of 4, what is the pH of the solution?

Back

8

Front

Which isotope has the greatest number of protons?

Back

Pu-239

Front

What is the molar mass of NaCl?

Back

58.44 g/mol

Front

What is the relationship between pressure and volume in a gas?

Back

Boyle's Law states that pressure is inversely proportional to volume.

Front

What is the pH scale range?

Back

0 to 14, where 7 is neutral.

Front

What is the definition of an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the formula to calculate moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol)