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Subject Test Chemistry

Question 4 of 17

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SAT Subject Test

Each of the questions or incomplete statements below is followed by five suggested answers or completions.  Select the one that is best in each case.

text ...SO end text text end text subscript 2 end subscript left parenthesis g right parenthesis plus ... text O end text text end text subscript 2 end subscript left parenthesis g right parenthesis rightwards arrow text ...SO end text text end text subscript 3 end subscript left parenthesis g right parenthesis

According to the reaction represented by the unbalanced equation above, how many moles of text SO end text text end text subscript 2 end subscript left parenthesis g right parenthesis are required to react completely with 1 mole of text O end text text end text subscript 2 end subscript left parenthesis g right parenthesis ?

Select an Answer

0.5 mol

Correct Answer: 
No

1 mol

Correct Answer: 
No

2 mol

Correct Answer: 
Yes

3 mol

Correct Answer: 
No

4 mol

Correct Answer: 
No

This question tests your ability to balance chemical equations. The stoichiometry of the correctly balanced equation indicates that 2 moles of text SO end text text end text subscript 2 end subscript left parenthesis g right parenthesis are needed to react completely with 1 mole of text O end text text end text subscript 2 end subscript left parenthesis g right parenthesis to form 2 moles of text SO end text text end text subscript 3 end subscript.

Question Difficulty: 
easy