Moles Summative Test-Day 1

What is the mole used for?

• To count the number of elements in a substance

• To count the number of atoms or molecules

• To measure the amount of energy

• To measure the amount of bonding

Tags

NGSS.HS-PS1-7

The mass of one mole of substance is called...

• molecular mass

• mole constant

• molar mass

• atomic weight

If an atom of Fluorine has an atomic mass of 19 amu, it has a Molar mass of ____

• 19 lbs.

• 19 kg

• 19 g

• 19 amu

Which has more molecules?

• 1 mole H₂O

• 1 mole Al(OH)₃

• 1 mole NaCl

• They are all the same

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

How many particles would be in 8.4 moles of Octane?

• 5.77 x 10²³

• 5.04 x 10²⁴

• 5.77 x 10²⁶

• 5.04 x 10²³

Which has more mass?

• 1 mole H₂O

• 1 mole Ag

• 1 mole NaCl

• They are all the same

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

• 60 mol
• 17 mol
• 0.42 mol
• 7 mol

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

• 6.02 x 10^23 atoms
• 8.14 atoms
• 4.90 x 10^24 atoms

Tags

NGSS.HS-PS1-7

Find the mass in grams of 0.75 moles of magnesium (Mg).

• 32 grams
• 18 grams
• 2.21 x 10 ^23 grams

Tags

NGSS.HS-PS1-7