Unit 6 practice

To convert from moles to particles, you should multiply by ....

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To convert from particles to moles, you should multiply by ....

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The number 6.022 x 10²³ is called...

• A dozen

• Bohr's number

• Buckley's number

• Avogadro's number

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

Fluorine is diatomic.  What is the molar mass of fluorine gas?

• 18.998 g/mol
• 37.996 g/mol
• 9 g/mol
• 18 g/mol

What is the mass of 2.50 mol of oxygen gas O₂?

• 40.0 g
• 80.0 g
• 16.0 g
• 32.0 g

If I have 6.02 x10²³ molecules of CO₂, what is the mass?

• 44.0 g
• 2.65 x10²³ g
• 1.37 x10²² g
• 96.0 g

Tags

NGSS.HS-PS1-7

How many moles of copper (II) chlorate contain 1.45x10²¹ formula units?

• 8.73x10⁴⁴
• 1.20x10²⁴
• 0.00241
• 1.45

How many atoms would be contained in 454 grams of iron (Fe)?

• 6.02x10²³ atoms
• 8.14 atoms
• 4.90x10²⁴ atoms
• 55.85x10²³ atoms

Tags

NGSS.HS-PS1-7

How many grams are in 3.3 mol of Potassium Sulfide?

• 360 g
• 454 g
• 238 g
• 132 g

Tags

NGSS.HS-PS1-7