Moles

How many moles are in 4.5x10²⁴ particles?

• 0.747 particles
• 0.747 mol
• 2.71x10⁴⁷ mol
• 2.71x10⁴⁷ particles

Tags

NGSS.HS-PS1-7

What is the molar mass of Mg₃N₂?

• 191.6 g/mol
• 76.64 g/mol
• 38.32 g/mol
• 100.95 g/mol

What is the mass of one mole of Al₂(SO₄)₃?

• 75.04 g
• 342.14 g 
• 75.04 mol
• 342.14 mol

How many moles of carbon atoms are there in 5g of carbon?

• 60 mol
• 17 mol
• 0.42 mol
• 7 mol

How many molecules are there in 5.9 moles of NaCl?

• 3.5x10²⁴molecules
• 9.79x10^-24molecules
• 1.02x10²³molecules

How many moles of (NH₄)₂O are present in 74.9 g?

• 3,907.0  moles
• 1.44 moles
• 8.67x10²³moles
• 0.79 moles

What is a mole?

• 6.022 x 10²³ particles of any substance

• A small burrowing animal

• A dark spot on your skin

• A spy

An element's molar mass can be found on what part of an element's entry on the periodic table?

• atomic number

• atomic mass

• group number

• it can't be found on the periodic table

Which of these elements has the highest molar mass?

• Hydrogen

• Iron

• Carbonate

• Cobalt

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

• 53
• 63.55g
• 126.9
• 6.02 x 10²³

Tags

NGSS.MS-PS1-1