Chemical Quantities

How many atoms of iodine are in a mole of iodine?

• 53

• 63.55g

• 126.9

• 6.02 x 10²³

The number 6.02 x 10²³ is called...

• Obama's number

• Bohr's number

• Trump's number

• Avogadro's number

Tags

NGSS.HS-PS1-7

How do we get mass from moles?

• multiply by avogadro's number

• multiply by molar mass

• divide by avogadro's number

• divide by molar mass

What is the mass of 0.75 moles of (NH₄)₃PO₄?

• 101.75 g

• 121.75 g

• 111.75 g

• 131.75 g

What is the purpose of using moles in chemistry?

• To count the number of atoms or molecules

• To measure the temperature of a substance

• To determine the color of a compound

• To calculate the volume of a solution

Tags

NGSS.HS-PS1-7

How many atoms are in a mole of a substance?

• 6.02 x 10^23 atoms

• 1 atom

• 10 atoms

• 100 atoms

What is Avagadro's number? 

• 6.02 X 10 ²⁴

• 6.02 X 10 ²³

• 6.02 X 10 ²²

• 6.02 X 10 ²¹

What is the mole roadmap used for?

• To convert between mass, volume, and representative particles

• To determine the molar mass of a substance

• To calculate the density of a gas

• To measure the volume of a gas at STP

How do we quantify matter in chemistry?

• By weight, volume, and count

• By temperature, pressure, and color

• By length, width, and height

• By taste, smell, and texture

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

What is the molar mass of hydrogen peroxide (H₂O₂)?

• 34.0 g/mol

• 18.0 g/mol

• 2.0 g/mol

• 16.0 g/mol