Intro to The Mole Concept

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

• 53
• 63.55g
• 126.9
• 6.02 x 10²³

How can you figure out how particles (atoms) there are in 2 moles?

• 2
• 2 x (6.02 x 10²³)
• 2 x (atomic mass)
• 2 ÷ (6.02 x 10²³)

How many Carbon Atoms are in 4 moles of Carbon?

• 6.02 x 10²³

• 1.33 x 10²³

• 4.52

• 2.408 x 10²⁴

Tags

NGSS.HS-PS1-7

What is the gram atomic mass (molar mass) of sodium?

• 11
• 23
• 45.98
• 3

Which of the following statements regarding the mole is incorrect?

• A mole is a counting unit equal to 6.02 x 10^23 particles.

• The number of particles in a mole is known as Avogadro’s number.

• A mole of particles of an element is numerically equal to the atomic mass of the element.

• none of the above

How many moles are in 3.01 x 10²³ atoms of magnesium?

• 0.500 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5.00 moles

Tags

NGSS.HS-PS1-7

What is the molar mass (gram atomic mass) of carbon?

• 6.0 g/mol
• 12.0 g/mol
• 22.4 g/mol
• 6.02 x 10²³ g/mol

The molar mass of an element is the mass of one ____ of the element, with numbers taken from the mass number on the periodic table.

• atom

• molecule

• mole

• gram

How many gram is 0.5 mol of Copper atoms? (Cu:63.5g/mol)

• 63.5 g

• 6.35 g

• 31.75 g

• 3.175 g

Tags

NGSS.HS-PS1-7

Which would have more atoms?

• 1 mole of Li
• 1 mole of Au
• 1 mole of Si
• None, all are equal