E-Learning: Mole Conversions Celebration of Knowledge 5/7

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³
• 146
• 4.15
• 1.51x10²⁴

Tags

NGSS.HS-PS1-7

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

• 24 molecules
• 180 molecules
• 180 g
• 6.02 x 10²³ molecules

What is the mass of 0.89 mol of CaCl₂?

• 111 grams
• 0.008 grams
• 98.9 grams
• none of the choices

Tags

NGSS.HS-PS1-7

How many moles of copper are 4.57 x 10¹³ atoms of copper?

• 7.59 x 10^-11 moles
• 2.75 x 10³⁷ moles
• 7.59 x 10¹¹ moles
• 2.75 x 10³³ moles

Tags

NGSS.HS-PS1-7

What is the mass of one mole of silver?

• 32.06 g

• 107.87 g

• 14.01 g

• 22.99 g

Determine the volume in liters of 0.60 mol of SO₂ gas at STP

• 13.44L

• 37.33L

• 0.026L

• 1.344L

What is the volume of 3.70mol of Nitrogen gases at STP

• 77.7L

• 6.05L

• 82.8L

• 0.1L65

Potassium bitartrate or Cream of Tartar (KC₄H₅O₆) has a molar mass of 188.2 g/mole. If you have 0.025 moles of it, what mass of Cream of Tartar do you have?

• 1.9 g

• 2.6 g

• 3.8 g

• 4.7 g

Tags

NGSS.HS-PS1-7

Fun Fact: some people think that air is a synonym for oxygen, but it is actually 78% nitrogen and only 21% oxygen.

If you have a large balloon filled with 6.0 L of nitrogen at STP, how many moles of N₂ are in that balloon?

• 0.51 moles

• 0.44 moles

• 0.27 moles

• 0.19 moles

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