Avogadro's Number

A mole of Neon contains
6.02 x 10²³ _____

• atoms

• formula units

• ions

• molecules

The number of  particles are in one mole of a substance?

• mole number

• mass number

• molar mass

• Avagadro's number

What is the definition for Avogadro's number?

• number of grams per one mole of a substance

• whole number ratio that is a multiple of a chemical formula

• simplest, whole number ratio of a chemical formula

• 6.02 x 10^23 particles per one mole of a substance

Tags

NGSS.HS-PS1-7

How many atoms are in 2.0 moles of oxygen? Round to correct sig figs.

• 1.2 x 10²⁴

• 1.2 x 10^-24

• 3.3 x 10^-24

• 3.3 x 10²⁴

What is Avogadro's number?

• 6.02 x 10^23

• 3.14 x 10^7

• 1.67 x 10^-24

• 9.81 x 10^2

Avogadro's number is used to count what?

• Atoms

• Liters

• Grams

• Meters

How many molecules are in 1 mole of water?

• 6.02 x 10^23

• 3.01 x 10^23

• 1.20 x 10^24

• 9.81 x 10^2

If you have 3 moles of carbon atoms, how many atoms do you have?

• 1.81 x 10^24

• 6.02 x 10^23

• 3.01 x 10^23

• 9.03 x 10^23

What is the significance of Avogadro's number in chemistry?

• It defines the number of particles in a mole.

• It measures the mass of a substance.

• It calculates the volume of a gas.

• It determines the density of a liquid.

Which of the following represents Avogadro's number in scientific notation?