Stoichiometry Prac
Authored by Teresa Guth
Chemistry
9th - 12th Grade
NGSS covered
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5 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
balance the equation
Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)
How many grams of HCl are consumed by the reaction of 2.50 moles of magnesium?
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
balanced the equation
Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)
What is the mass in grams of H₂ gas when 4.0 moles of HCl is added to the reaction?
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of Mg to moles Fe?
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Mg + 2H2O --> Mg(OH)2 + H2
What volume (L) of hydrogen will be produced at STP by the reaction 67.3 g of magnesium?
62.0 L
0.12 L
2.77 L
1.15 L
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
balanced the equation
Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)
What is the volume of H₂ gas when 4.0 moles of HCl is added to the reaction?
45 L
44.8 L
89.6 L
90. L
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