Empirical Formula Calculation Quiz

What are the constituent elements of the compound discussed in the video?

• Hydrogen and Oxygen

• Sulfur and Oxygen

• Nitrogen and Oxygen

• Carbon and Hydrogen

What is the purpose of finding the empirical formula of a compound?

• To identify the color of the compound

• To determine the exact number of atoms in a molecule

• To calculate the mass of the compound

• To find the relative number of atoms of each element in the compound

What is the molar mass of nitrogen used in the calculations?

• 12.01 grams per mole

• 14.01 grams per mole

• 16.00 grams per mole

• 18.02 grams per mole

How do you find the greatest common factor (GCF) of the moles of elements?

• By dividing by the largest value

• By adding the moles of each element

• By multiplying the moles of each element

• By dividing by the smallest value

What is the initial empirical formula obtained before adjusting to whole numbers?

• N1O2.504

• N2O5

• N1O1

• N2O4

Why can't the empirical formula have non-whole number subscripts?

• Because it looks better

• Because it is easier to calculate

• Because it is a rule of thumb

• Because atoms are indestructible and must be whole

What is the final empirical formula of the compound?

• N2O4

• N2O5

• N1O2

• N1O1

What additional information is needed to determine the molecular formula?

• The volume of the compound

• The color of the compound

• The molar mass of the compound

• The temperature of the reaction

What is the difference between empirical and molecular formulas?

• Both give the relative number of atoms

• Both give the exact number of atoms

• Empirical formula gives the relative number of atoms, molecular formula gives the exact number

• Empirical formula gives the exact number of atoms, molecular formula gives the relative number

What is the rule for rounding subscripts to whole numbers in empirical formulas?

• Round to the nearest whole number

• Round up if above 0.5

• Consider it a whole number if within 0.1 of a whole number

• Always round down