What is Avogadro's number?

• 6.02 x 10²³

• 1 mole

• 600 million

• 6.02

Tags

NGSS.HS-PS1-7

The molar mass of a single element is equal to its...

• Atomic mass

• Atomic number

• Oxidation number

• Valence electrons

How do we calculate the molar mass of H₂O?

• 2+16=18
• 1+16=17
• 2+32=34
• 1+31=32

What is the molar mass of CO₂?

• 12 g/mol

• 16 g/mol

• 32 g/mol

• 44 g/mol

Find the molar masses of the following compounds:

(NH₄)₂CO₃

• 303.3 g/mole

• 102.9 g/mole

• 74.1 g/mole

• 160.0 g/mole

• 96.0 g/mole

What is the mass of one mole of (He) Helium?

• 4 g

• 2 g

• 8 g

• There is no way to know

What is the mass of one mole of aluminum?

• 27 g
• 13 g
• 54 g
• 14 g

What is the molar mass of sodium?

• 11
• 23
• 45.98
• 3

What is the molar mass of NaOH?

• 40 g/mol
• 38.989 g/mol
• 23.998 g/mol
• 57.004 g/mol

Calculate the molar mass for Al(OH)₃

• 78.0 g/mol

• 72 g/mol

• 28 g/mol

• 25 g/mol