Moles to Particles

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

• 1.38 X 10²³ moles H₂O

• 1.38 moles H₂O

• 2 moles H₂O

• 1 mole H₂O

Tags

SC3.c.

A mole of Neon contains
6.02 x 10²³ _____

• atoms

• formula units

• ions

• molecules

How many molecules are in 27.5 grams of NaOH

• 41.4 molecules

• 4.14 x 10²³ molecules

• 4.14 x 10²⁵ molecules

• 1.83 x 10^-21 molecules

Which of the following statements regarding the mole is INCORRECT?

• A mole is a unit of quantity equal to 6.02 x 10²³ 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

Tags

NGSS.HS-PS1-7

How many formula units are in 2.5 moles of NaCl?

• 1.5 x10²⁴ formula units

• 1.5 formula units

• 4.2 formula units

• 4.2 x10^-24 molecules

How many molecules are there in 31.8 moles of water?

• 5.28 x 10^-23 molecules

• 1.91 x 10²⁵ molecules

• 5.28x 10-²⁵

• 1.91 x 10²²

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

How many moles are 2.85 x 10²⁰ atoms of iron?

• 4.73 x 10^-4 moles

• 1.72 x 10⁴ moles

• 1.72 x 10^-42 moles

• 4.73 x 10⁴ moles

A mole of carbon disulfide contains 6.02 x 10²³ _____

• atoms

• formula units

• ions

• molecules

Tags

NGSS.HS-PS1-7

How many particles are in 3 moles of carbon dioxide (CO2)?

Tags

NGSS.HS-PS1-7