Stoichiometry Review

How do you feel about stoichiometry

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Tags

NGSS.HS-PS1-7

2H₂  +   O₂  →  2H₂

How many moles of oxygen are consumed if 8 moles H₂ are used?

• 2
• 4
• 6
• 8

Stoichiometry is the branch of chemistry that deals with reactants and products in chemical reactions focusing on

• bonding

• energy transfers.

• mass relationships.

• physical characteristics.

Tags

NGSS.HS-PS1-7

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the

• calculations

• experimentation in the laboratory

• theoretical yield.

• estimation

Tags

NGSS.HS-PS1-7

 

A balanced chemical equation allows one to determine the (a)   ratio of any two substances in the reaction.

Actual yield must be determined by...

• calculations

• experimentation in the laboratory

• theoretical yield.

• estimation

3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe

What is the Ratio of moles of MgO to moles Fe?

• 3mol Mg / 2 mol Fe
• 2 mol Mg/ 3 mol Fe
• 1 mol Fe/ 2 mol Fe
• 3 mol MgO / 2 mol Fe

Tags

NGSS.HS-PS1-7

 SiO₂ + 3C → SiC + 2CO

I need to add 8 moles of Carbon to the reaction. How many grams of Carbon should I weigh? Molar Mass of C = 12.01 g/mol

• _{96 g}
• 0.67 g
• 2.67 g
• 48 g

How do you feel about the school year ending soon and the start of summer of 22'

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• I hate the summer

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)

12.00 moles of NaClO₃ will produce how many grams of O₂?

Molar Mass O₂ = 32 g/mol

• 256 g of O₂
• 576 g of O₂
• 288 g O₂