Molar Conversions Two Step

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

• A
• B
• C
• D

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? Show your work. 

• B : 0.664mol Co
• A: 2.41x10⁴⁷mol Co
• A : 0.664ol Co
• B: 2.41x10⁴⁷mol Co

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

• A
• B
• C
• D

What is the molar mass of AuCl₃? Show your work.

• 96 g
• 130 g
• 232.5 g
• 303.3 g

What is the mass in grams of 5.90 mol C₈H₁₈ (molar mass = 114.232 g/mol)?

• .0512 g
• 19.4 g
• 674 g
• 389 g

How many moles are in 16.94g of water (molar mass = 18.02 g/mol)?

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

Balance this equation:
__ FeS + __HCl --> __FeCl₂ + __H₂O

• 1, 2, 1, 1
• It's already balanced
• 2, 1, 2, 1
• None of these

Tags

NGSS.HS-PS1-7

How many particles are in 13.5 grams of Beryllium?

• 1.5 particles
• 9 particles
• 4x10²³ particles
• 9x10²³ particles

If you are going from grams of Na to grams of NaCl, what unit label is going to be on the bottom of the first step?
2Na   +   Cl₂  −−〉  2NaCl

• Grams Na
• Grams NaCl
• Moles Na
• Moles NaCl

Tags

NGSS.HS-PS1-7

The number of molecules in a mole

• Avogadro's number
• Actual yield
• 22.4 L
• Stoichiometry