Chapter Test Practice test part 2 - Molar Mass

What is a mole in Chemistry?

• A type of chemical bond
• A method of counting or grouping atoms
• A measurement of volume
• A way to measure temperature

What is the molar mass of a substance?

• The volume of one mole of a substance in liters
• The mass of one atom of a substance in grams.
• The mass of one mole of a substance in grams.
• The number of atoms in a single molecule.

How do you calculate the molar mass of a compound?

• Multiply the masses of the elements together
• Subtract the smallest element's mass from the total
• Divide the mass of the largest element by the number of atoms
• Add together the masses of the individual elements in the compound

What should you do if there is a subscript in a chemical formula?

• Ignore it and add the masses normally
• Multiply the mass of the element by the number in the subscript
• Add the subscript to the total molar mass
• Divide the mass of the element by the subscript

What is the correct unit for molar mass?

• g (grams)
• mol (moles)
• mol/g (moles per gram)
• g/mol (grams per mole)

Tags

NGSS.HS-PS1-7

The molar mass of an element is equal to:

• The atomic number of the element
• The number of protons in the element
• The mass on the periodic table, in grams
• The density of the element