Moles and Milligrams Conversion Quiz

What tools are recommended to have on hand when learning to convert moles to milligrams?

• A computer and a notebook

• A scientific calculator, periodic table, and scratch paper

• A ruler and a pencil

• A smartphone and a calculator

What is the molar mass of iron as found on the periodic table?

• 55.85 g/mol

• 58.85 g/mol

• 60.85 g/mol

• 50.85 g/mol

How many atoms are in one mole of iron according to Avogadro's number?

• 6.02 x 10^22

• 6.02 x 10^23

• 6.02 x 10^25

• 6.02 x 10^24

What is the first step in converting milligrams to grams?

• Divide by 1000

• Multiply by 1000

• Subtract 1000

• Add 1000

In the example problem, what is the final result of converting 6.34 x 10^-3 mg of iron to moles?

• 1.14 x 10^-7 moles

• 1.14 x 10^-6 moles

• 1.14 x 10^-8 moles

• 1.14 x 10^-5 moles

What is the molar mass of boron as found on the periodic table?

• 11.81 g/mol

• 9.81 g/mol

• 10.81 g/mol

• 12.81 g/mol

What is the relationship between grams and milligrams?

• 1 gram = 10 milligrams

• 1 gram = 500 milligrams

• 1 gram = 1000 milligrams

• 1 gram = 100 milligrams

How many milligrams are in 2.45 x 10^4 moles of boron?

• 2.65 x 10^7 mg

• 2.65 x 10^8 mg

• 2.65 x 10^9 mg

• 2.65 x 10^6 mg

What should you do if you encounter a number other than one in the denominator during conversion?

• Multiply by it

• Divide by it

• Add it

• Subtract it

What is the purpose of the practice problems at the end of the video?

• To test your knowledge of the periodic table

• To practice converting moles to milligrams and vice versa

• To learn about Avogadro's number

• To memorize the atomic masses