Stoichiometry Conversions The Mole and Avogadro's Number

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

• 53

• 63.55g

• 126.9

• 6.02 x 10²³

Tags

NGSS.HS-PS1-7

The number 6.02 x 10²³ is called...

• Obama's number
• Bohr's number
• Trump's number
• Avogadro's number

How many atoms would be in 8.4 moles of Octane (C₈H₁₈)?

• 5.77 x 10²³

• 5.04 x 10²⁴

• 1.3 x 10²⁶

• 5.04 x 10²³

How can you calculate how many particles there are in 2 moles?

• 2

• 2 x (6.02 x 10²³)

• 2 x (atomic mass)

• 2 ÷ (6.02 x 10²³)

How many atoms are in 3.5 moles of arsenic atoms?

• 5.8 x 10^-24
• 7.5 x 10¹
• 2.1 x 10²⁴
• 1.7 x 10²³

How many molecules of sugar (C₆H₁₂O₆) are in a mole of sugar?

• 24 molecules

• 180 molecules

• 180 g

• 6.02 x 10²³ molecules

Tags

NGSS.HS-PS1-7

How many atoms are in 6.3 mol Zn?

• 6.0x10²³atoms Zn
• 3.8x10²⁴atoms Zn
• 1.0x10^-23atoms Zn
• 410atoms Zn

How many Carbon Atoms are in 4.52 moles of Carbon?

• 6.02 x 10²³
• 1.33 x 10²³
• 4.52
• 2.72 x 10²⁴

How many atoms are in 3.4 moles of silver, Ag?

• 6.02 x10²³
• 2.05 x10²⁴
• 5.65 x10^-24
• 6.02 x 10²⁴

How many moles of methane (CH₄) are in 1.24 x 10²³ molecules of methane?

• 6.02 x 10²³
• 7.46 x 10⁴⁶
• 978
• 0.206