Mole Conversion Review

Which conversion factor should be used for the following question " How many molecules are there in 4.00 moles of glucose, C₆H₁₂O₆? 

• 1 mole = 78.12 g
• 1 mole = 22.4 L 
• 1 mol = 6.02x 10²³ particles 
• more than one

In order to convert from grams of a substance to moles of a substance, I would need to ___________.

• divide by the molar mass

• divide by the molecular mass

• divide by the molecular weight

• divide by the mass of one mole

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

In order to convert from grams of a substance to moles of a substance, I would need to ___________.

In order to convert from moles of a substance to amount of representative particles, I would need to _______________.

Tags

NGSS.HS-PS1-7

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²³
• 146
• 4.15
• 1.51x10²⁴

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

What is the mass of 0.89 mol of CaCl₂?

• 111 grams

• 0.008 grams

• 98.9 grams

• 67.22 grams

48.86 g of cobalt is equal to how many moles of cobalt?

• 2879 moles

• 8.291 moles

• .8291 moles

• 8.291 x 10 moles

What is the molar mass of (NH₄)₂CO₃ ?

• 144.0g/mol

• 138.0 g/mol

• 96.1 g/mol

• 78.1 g/mol