Mole and Avogadro's Constant

One mole of an atom is equal to Avogadro's constant, 6.02 x 10²³

• True

• False

• maybe

Tags

NGSS.HS-PS1-7

One mole of sulfur is equal to

• 6.02 x 10²³ atoms

• 6.02 x 10²³ molecules

• 6.02 x 10²³ formula units

The molar mass of a substance is equal to the

• atomic mass of an atom

• sum of all the atomic masses expressed in grams

• Avogadro's constant, 6.02 x 10²³

• sum of all the atomic masses of all elements in a formula unit or molecules

A formula mass is the molar mass of a given compound or formula unit (ionic).

• True

• False

• Maybe

Tags

NGSS.HS-PS1-7

Which statement is true about molecular mass?

• Molecular mass is the molar mass of a substance in ionic compound.

• Molecular mass is the molar mass of the substance in a molecule.

• Molecular mass is the sum of the atomic masses of all atoms present in a covalent compound.

• Molecular mass of substances is equal to 6.02 x 10²³ molecules.

A mole is a measurement of ONE UNIT of a substance such as

• a molecule

• an atom

• a formula unit

• all of the above

Tags

NGSS.HS-PS1-7

All statements are true EXCEPT...

• One mole of an atom is equal to 6.02 x 10²³ atoms

• One mole of water is equal to 6.02 x 10²³ molecules.

• One mole of oxygen is equal to 6.02 x 10²³ atoms.

• One mole of oxygen is equal to 16.00 amu.

Which statements are TRUE about the molar measurement of a hydrogen atom?

• One mole of hydrogen is equal to 6.02 x 10²³ atoms.

• The molar mass of ONE MOLE hydrogen atom is 1.008 g.

• The molar mass of a hydrogen atom is 1.008 amu.

• all of the above

All statements are true about hydrogen EXCEPT

• one mole of hydrogen atom has a mass of 1 gram.

• one mole of hydrogen molecule(H₂) has a mass of 2 grams.

• one mole of hydrogen atom has 6.02 x 10²³ molecules

Tags

NGSS.HS-PS1-7

What is the molar mass of one mole of carbon?

• 6.02 x 10²³ carbon atoms

• 12 grams

• 12.01 amu