Dimensional Analysis Review

What conversion factor is used to convert grams to moles

• Avogadro's number

• Molar Mass

What conversion factor is used to convert moles to atoms

• Avogadro's number

• Molar Mass

Tags

NGSS.HS-PS1-7

What's the "given" in the following problem? How many particles are in 0.250 grams of potassium permanganate (KMnO₄)?

• 0.250 grams KMnO₄

• particles

• KMnO₄

• 0.250

What's the "goal unit" in the following problem? How many particles are in 0.250 grams of potassium permanganate (KMnO₄)?

• 0.250 grams KMnO₄

• particles

• KMnO₄

• 0.250

Tags

NGSS.HS-PS1-7

Particles include

• atoms only

• molecules only

• moles only

• molecules and atoms

Tags

NGSS.MS-PS1-1

Avogadro's number is

• used to convert moles to atoms

• 6.022 x 10²³ particles/mole

• used to convert molecules to moles

• all of the above

The molar mass of a compound is found by:

• adding the atomic numbers

• multiplying by 6.02 X 10²³

• adding up the masses of all the atoms

• multiplying the atomic mass by Avogadro’s number

You are given two sealed flasks. Flask A contains 1.0 mole of solid Sodium. Flask B contains 1.0 mole of liquid Mercury. Which of the following statements is true?

• the samples in the two flasks have the same

  mass

• the samples in the two flasks have the same

  number of atoms

• the volume of sodium is the same as the

  volume of mercury

• the number of sodium atoms is less than the

  number of mercury atoms

Tags

NGSS.HS-PS1-7

Which has a greater mass: a mole of silver (Ag) atoms, a mole of Uranium (U) atoms, or a mole of gold (Au) atoms?

• Silver

• Gold

• They all have the same mass because it is one mole of each

• Uranium

What is the molar mass of Carbon Tetrachloride (CCl₄₎?

• 35.453 g/mol

• 83.49 g/mol

• 47.46 g/mol

• 153.82 g/mol