Moles Exam

What is the molar mass of fluorine gas, F₂?

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

How many grams is 1.2 moles of Neon?

• 0.05 grams
• 16.6 grams
• 21.2 grams
• 24 grams

Avogadro's number of representative particles is equal to one_____.

• kilogram
• gram
• kelvin
• mole

How many moles are in 4.3 x 10²⁴ molecules of H₂O?

• 6.02 x 10²³
• 7.14
• 18.02
• 128.66 

Tags

NGSS.HS-PS1-7

How many moles are in 16.94 g of water?

(a)  

How many grams are in 0.375 mol KBr?

(a)  

How many moles are equal to 89.23 g of calcium oxide, CaO?

• 1.59 mol

• 2.03 mol

• 1.77 mol

• 3.21 mol

Tags

NGSS.HS-PS1-7

How many grams are in 0.523 mol of AlPO₄?

• 63.78 g

• 38.68 g

• 47.23 g

• 55.43 g

Tags

NGSS.HS-PS1-7

How many moles of Francium (Fr) are in 7.4 x 10²⁶ atoms?

• 1.23 moles

• 44.56 x 10⁴⁹ moles

• 87 moles

• 1.23 x 10³ moles Fr

Tags

NGSS.HS-PS1-7

What is the molar mass of Mg₃N₂?

• 191.6 g/mol
• 76.64 g/mol
• 38.32 g/mol
• 100.95 g/mol