E-Learning: Molar Mass K-Check 5/6

The molar mass of an element is equal to its...

• Atomic mass
• Atomic number
• Oxidation number
• Valence electrons

What is the molar mass of sodium?

• 11
• 23
• 45.98
• 3

What is the molar mass of fluorine gas?
(beware!)

• 18.998 g/mol
• 38 g/mol
• 9 g/mol
• 18 g/mol

Tags

NGSS.MS-PS1-1

Calculate the molar mass of NH₄NO₂

• 50 g/mol

• 60 g/mol

• 64 g/mol

• 78 g/mol

Calculate the molar mass for Al(OH)₃

• 78.0 g/mol

• 72 g/mol

• 28 g/mol

• 25 g/mol

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.01 moles
• 1421.52 moles
• 32.3 moles
• 0.73 moles

Tags

NGSS.HS-PS1-7

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g
• 19.4 g
• 673 g
• 389 g

Tags

NGSS.HS-PS1-7

Which compound has the smallest molar mass?

• CO

• CO₂

• H₂O

• H₂O₂

How many grams are in 11.9 moles of chromium?

• 50 g
• 619 g
• 0.23 g
• 4.4 g

How many moles are in 22g of argon?

• 0.55mol
• 1.8mol
• 8.8x10²mol