36.0 g of Be contains how many moles?

• 0.25 mol
• 4.0 mol
• 45 mol
• 320 mol

4.0 moles of H₂O would have what mass?

• 72 g
• 23 g
• 68 g
• 4.5 g

Tags

NGSS.HS-PS1-7

A mass of 6 g of Carbon contains

• 1 mole of C
• 2 moles of C
• 0.5 moles of C
• 72 moles of C

Tags

NGSS.HS-PS1-7

How many moles are in 22 g of argon? 

• 880 moles
• 0.55 moles
• 1.81 moles
• 5 moles

Tags

NGSS.HS-PS1-7

How many grams are in 88.1 moles of magnesium?

• 2141 g
• 0.3 g
• 30 g
• 3.6 g

Tags

NGSS.HS-PS1-7

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³
• 146
• 4.15
• 1.51x10²⁴

Tags

NGSS.HS-PS1-7

What is Avogadro's Number?

• 6 x 10²³
• 6 x 10³
• 600
• 6.0

How many moles are in 8.30 X 10²³ molecules of H₂O?

• 1.38 X 10²³ moles H₂O
• 1.38 moles H₂O
• 2 moles H₂O
• 138 moles H₂O

How many atoms are in 1.50 moles of Hg?

• 9.03x10²³ atoms Hg
• 9.03x10²⁴ atoms Hg
• 903 atoms of Hg
• 9.03 atoms of Hg

Tags

NGSS.HS-PS1-7

How many molecules are in 3.6 grams of NaCl?

• 0.06
• 1.0x10²¹
• 1.3x10²⁶
• 3.7x10²²