What are the initial counts of strontium, hydrogen, and oxygen atoms on the reactant side of the equation?

Balancing Chemical Equations Practice

Interactive Video
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Chemistry
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9th - 10th Grade
•
Hard

Aiden Montgomery
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1 strontium, 2 hydrogens, 1 oxygen
2 strontiums, 1 hydrogen, 2 oxygens
1 strontium, 1 hydrogen, 2 oxygens
2 strontiums, 2 hydrogens, 1 oxygen
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On the product side, how many hydrogen atoms are there before balancing?
4
3
5
2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common mistake when counting hydrogen atoms in this equation?
Forgetting to double the hydrogen atoms in the hydroxide
Adding extra hydrogen atoms
Counting the oxygen atoms twice
Ignoring the strontium atoms
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What coefficient is used to balance the water molecules in the equation?
2
3
4
1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After balancing, how many oxygen atoms are present on each side of the equation?
1
4
3
2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final balanced chemical equation for the reaction between strontium and water?
Sr + H2O → Sr(OH)2 + H2
2Sr + 2H2O → 2Sr(OH)2 + H2
Sr + 2H2O → Sr(OH)2 + 2H2
2Sr + H2O → Sr(OH)2 + 2H2
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