Moles, Mass, Molarity

What is the numerical value of Avogadro's number?

• 60.22x10²³
• 6.022x10²³
• 6.022x10³²
• 6.022x10²⁴

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NGSS.HS-PS1-7

How many atoms are found in 1 mol of Xenon atoms?

• 6.022x10²³
• 3.011x10²³
• 1.204x10²⁴
• 6.022x10²⁴

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NGSS.HS-PS1-7

How many representative particles are found in 1.23 mol of Polonium. 

• 2.41x10²⁴
• 7.53x10²³
• 6.02x10²³
• 1.20x10²⁴

How many moles are in 9.99x10²⁰ atoms of lead?

• 1.66x10^-3
• 1.66x10³
• 1.66
• 1.66x10^-43

Tags

NGSS.HS-PS1-7

How many moles are in 1.00x10²⁵ Ni²⁺ ions?

• 1.661 mol
• 16.61 mol
• 0.1661 mol
• 166.1 mol

What is molar mass?

• The mass of an atom
• The mass of a mole of atoms
• The mass of a cute little star-nosed mole
• When did we talk about this?

Tags

NGSS.HS-PS1-7

Which has more atoms, 0.1 mole of silver or 1 mole of gold?

• 1 mole of gold
• 0.1 mole of silver
• False, they are the same
• Not enough information

Tags

NGSS.HS-PS1-7

What is the mass of 1.25 mol of Sn?

• 14.839 g
• 148.39 g
• 0.011 g
• 94.4 g

Tags

NGSS.HS-PS1-7

How many moles of K₂SO₄ would have a mass of 50.0 g?

• 0.286 mol
• 286 mol
• 2.86 mol
• 28.6 mol

What would a sample of 3.99x10²⁴ water molecules weigh?

• 11.92 g
• 119.26 g
• 1.926 g
• 6.63 g