HW Stioch Post break Quizzizz

How many molecules are there in 5.9 moles of NaCl?

• 3.5x10²⁴ molecules

• 9.80x10^-24 molecules

• 1.02x10²³ molecules

• 6.02x10²³ molecules

How many moles are present in 32.3 grams of carbon dioxide (CO₂)?

• 44.0 moles

• 1420 moles

• 32.3 moles

• 0.734 moles

You have 2 moles of graphite (KC₈) in your pencil. How many grams of graphite are in your pencil?

• 135.19 g

• 270.37 g

• 67.59 g

• 134 g

What is Avogadro's number?

• 6.022 x 10^23

• 6.022 x 10^25

• 6.022 x 10^24

• 6.022 x 10^22

How many moles are there in 25 grams of iron (Fe)?

• 0.223

• 0.670

• 0.894

• 0.447

How many grams are in 2.3 moles of aluminum?

• 62.05 g

• 0.08 g

• 1.30 g

• 1.38 x 10^24 g

• 100.09g

• 100g

• 100.2g

• 101g

• 89mol

• 0.90mol

• 0.89mol

• 84mol

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g