The mole

What is a mole used for?

• To measure the amount of grams in a substance

• To measure the amount of particles (atoms or compounds) in a substance

• To measure the amount of energy in a substance

• To measure the amount of bonding in a substance

What is this number called: 6.02 x 10^23

• Avocado's Number

• Avogadro's Number

• Dalton's Number

• Mendeleev's Number

Tags

NGSS.HS-PS1-7

What is the molar mass of CO₂?

• 16 g

• 22 g

• 32 g

• 44 g

What is the mass of 4 moles of CO₂?

• 176 g

• 48 g

• 64 g

• 88 g

How many particles are in 1 mole of NaCl?

• 58

• 11

• 17

• 6.02 x 10²³

How are the mole and molar masses of elements related?

• The molar mass of any substance is always equal to the mass of 1 mole of that substance

• The molar mass multiplied by 6.02 x 10²³ equals a mole of that substance.

• The molar mass is the number of particles in one mole of a substance

How many moles are in 20 grams of calcium (Ca)?

• 0.1

• 0.5

• 1

• 3

One mole of water & one mole of glucose contain the same number of molecules.

• True

• False

• Unsure

2H₂   +   O₂  →  2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

• 4 moles
• 8 moles
• 16 moles
• 2 moles

Tags

NGSS.HS-PS1-7

In the reaction 2 H₂ + O₂ → 2 H₂O what is the mole ratio of oxygen to water?

• 1:2
• 2:1
• 3:4
• 4:3

Tags

NGSS.HS-PS1-7