Unit 6 Revew

How many molecules are in 2.50 mol of NaCl?

• 1.51x10²³

• 146

• 4.15

• 1.51x10²⁴

How many atoms of carbon are in 6.00 g of carbon?

• 1.20x10²⁴ atoms C

• 6.02x10²³ atoms C

• 3.01x10²³ atoms C

• 1.50x10²³ atoms C

What is the mass of one mole of silver?

• 32.06 g

• 107.87 g

• 14.01 g

• 22.99 g

What is the molar mass of PbSO₄?

• 303.27 g/mol

• 255.27 g/mol

• 163.87 g/mol

• 372.27 g/mol

How many molecules are there in 31.8 moles of water?

• 5.28 x 10^-23

• 1.91 x 10²⁵

• 5.28x 10^-25

• 1.91 x 10²²

How many moles are in 16.94 g of water?

• 16.94 mol H₂O
• 0.9401 mol H₂O
• 305.3 mol H₂O
• 1.063 mol H₂O

What is the mass in grams of 5.90 mol C₈H_18?

• 0.0512 g

• 19.4 g
• 673 g
• 389 g

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

• 1.26 moles

• 0.800 moles

• 7670 moles

• 1.63 x 10^-22 moles

Tags

NGSS.HS-PS1-7

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

What does Avogadro's number represent?

• the molar mass in 1 mole of an element

• the amount of matter needed to reach 1 gram

• the number of particles in 1 mole of a substance

• the number of days left to the end of the school year

Tags

NGSS.HS-PS1-7