moles avagadros number

Which has the greatest number of balls:  One mole of soccer balls or one mole of tennis balls?

• One mole of soccer balls
• one mole of tennis balls
• They both have the same number of balls
• There is not enough information to solve.

How many moles of eggs are present in 6.0 x 10²³ eggs?

• 6.0 x 10²³ eggs
• 6.0 x 10²³ moles
• 1.0 moles
• 1 / (6.0 x 10²³) moles

Avogadro's number of representative particles is equal to one_____.

• kilogram
• gram
• kelvin
• mole

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

• 53
• 63.55g
• 126.9
• 6.02 x 10²³

What is a mole?

• It is the SI unit of amount of substance

• Its the amount of matter which contains 6.0 x 10²³ representative particles

• It's the amount of matter which contains Avagadro's number of representative particles

• All of these

If I have 1.5 moles of helium atoms, how many helium atoms do I have?

• 9.0 x 10²³ moles

• 9.0 x 10²³ atoms

• 4.0 x 10²³ atoms

• 2.5 x 10^-24 atoms

How many moles of FeCl₃ are in 3.0 x 10²⁴ formula units of FeCl₃?

• 5.0 moles

• 0.5 moles

• 0.2 moles

• 2.0 moles

Which of the following dimensional analysis setups will correctly convert 4.00x10²³atoms of cobalt to moles of cobalt? How many moles of colbalt are there?

• setup B : 0.6644mol Co
• setup A: 2.41x10⁴⁷mol Co
• setup A : 0.664mol Co
• setup B: 2.41x10⁴⁷mol Co

How many moles are in 8.30 X 10²³ molecules of H₂O?

• 1.38 X 10^-23 moles H₂O

• 1.38 moles H₂O

• 5.00 x 10²³ moles H₂O

• 138 moles H₂O

How many moles are in 2.91 X 10²² atoms of He?

• 1.75 x 10²⁴ moles He

• 4.83 moles He

• 4.83x10²³ moles He

• 0.0483 moles He