Mole, atoms, molecules, and grams conversion

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

Determine the mass of 4.20 moles of C₆H₁₂

• 353 g

• 0.0499 g

• 337 g

• 2.53 x 10²⁴ g

Which of the following dimensional analysis setups will correctly convert 27.76 g of Li to atoms of Li?

• A

• B

• C

• D

What is the mass of 1.2 x 10²⁴ atoms of C?

• 2.0 grams

• 24 grams

• 0.17 grams

• 1.4 x 10²⁵ grams

Calculate the number of atoms in 0.0340 g Zn.

• 5.20 x 10^-4 atoms Zn

• 3.13 x 10²³ atoms Zn

• 3.13 x 10²⁰ atoms Zn

• 2.05 x 10²² atoms Zn

Tags

NGSS.HS-PS1-7

How many grams are in 1.2 moles of neon?

• 0.059 grams

• 7.2 x 10²³ grams

• 2.0 x 10^-24 grams

• 24 grams

How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)₃?

• 1.26 moles

• 0.8 moles

• 7,670 moles

• 1.63 x 10^-22 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 : 0.664 mol Co

• setup A: 2.41x10⁴⁷mol Co

• setup A : 0.664 mol Co

• setup B: 2.41x10⁴⁷mol Co

How many formula units are there in 2.45 moles potassium chloride?

• 4.07 x 10^-24 
• 1.47 x 10²⁴ 
• 1.47
• 4.07

What is the molar mass of table salt (NaCl)? Read all options! Be careful!

• 58.44 amu

• 35.45 g/mol

• 22.99 g/mol

• 58.44 g/mol