How many HCl molecules do you need to balance this equation?
2Mg + (a) HCl ---> 2MgCl2 + 2H2
Practice: Chemical Equations
Quiz
•
Chemistry
•
9th - 12th Grade
•
Medium
David Wilson
Used 1+ times
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85 questions
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1.
DRAG AND DROP QUESTION
3 mins • 1 pt
How many HCl molecules do you need to balance this equation?
2Mg + (a) HCl ---> 2MgCl2 + 2H2
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What coefficient should be used to make the following equation balanced?
N2+O2--> __?__NO
1
2
3
4
3.
DRAG AND DROP QUESTION
3 mins • 1 pt
4.
DRAG AND DROP QUESTION
3 mins • 1 pt
Balance this equation (a) N2 + (b) H2 --> (c) NH3
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Balance this equation. _CF4 + _Br2 → _CBr4 + _F2
3,1,2,1
1,2,1,2
2,2,2,2
6.
DROPDOWN QUESTION
3 mins • 1 pt
According to the Law of Conservation of Mass (Matter), Matter cannot be (a) or (b) , it can only be (c) . This means however many atoms of an element we have before a reaction must be (d) to the number after a reaction.
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
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