Mole Conversion, Percent Composition, & Empirical Formula

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

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

• A
• B
• C
• D

How many grams are there in 25 moles of water?

• 25 g

• 450 g

• 18 g

• 50 g

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

What is the molar mass of one molecule of Nitrogen (N₂)?

• 14.01 amu

• 14.01 g

• 28.02 g

• 28.02 amu

Which of the following dimensional analysis setups will correctly convert 2.50 moles of sodium to grams of sodium?

• A
• B
• C
• D

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

• 0.050 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5.00 moles

What is the mass of one mole of silver?

• 32.06 g

• 107.87 g

• 14.01 g

• 22.99 g

how many atoms are contained in a 456 g sample of carbon dioxide (CO₂)?

• 10.34 atoms

• 6.237 x 10²⁴ atoms

• 1.871 x 10²⁵atoms

• 2.079 x 10²⁴ atoms

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

Tags

NGSS.HS-PS1-7