Avogadro

There are (a)   molecules in .5 moles of N₂O₅.

• 2 x 10²³ molecules

• 3.01 x 10²³ molecules

• 6.02 x 10²³ molecules

• 5.4 x 10²³ molecules

Tags

NGSS.HS-PS1-7

What is the approximate total number of atoms in 1.0 mole of lithium?

• 3.0

• 6.9

• 1.0 x 10²³

• 6.0 x 10²³

Tags

NGSS.HS-PS1-7

If there are 20 moles of CO2, how many molecules of CO2 are there?

• 20 x 10^23

• 1.2 x 10^23

• 8.9 x 10^23

• 20 x 10^23

A sample of silver contains 5.71 x 10²² atoms. How many moles of silver are present?

• 3.43 x 10⁴⁶ moles

• 0.0529 moles

• 0.0948 moles

• 10.5 moles

How many Mg atoms are present in 3.00 moles of MgCl2?

• 81 x 10^24

• 3.02 x 10^24

• 12.0 x 10^25

• 16.0 x 10^23

How many Mg atoms are present in 3.00 moles of MgCl2?

• 81 x 10^24

• 3.02 x 10^24

• 12.0 x 10^25

• 16.0 x 10^23

Tags

NGSS.HS-PS1-7

How many atoms are in a 59 g sample of gold?

• 3.00 atoms

• 116,000 atoms

• 1.81 x 10²⁴ atoms

• 3.60 x 10²⁵ atoms

We can be sure that a mole of table sugar and a mole of vitamin C are equal in their

• number of molecules.

• number of atoms.

• volume

• mass

The number 6.02 x 10²³ is called...

• Obama's number

• Bohr's number

• Trump's number

• Avogadro's number

Tags

NGSS.HS-PS1-7

What is Avogadro's Number?

• 6.023 x 10²³

• 6.023 x 10^-23

• 6.023

• 6.023 x 10¹⁰⁰

Tags

NGSS.HS-PS1-5