3. Chemical Reactions

Empirical Formula

객관식
What is the empirical formula of the compound given the combustion data: 2.08 g CO₂, 1.28 g H₂O, and 4.77 g SO₃?
1122
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미해결 질문
What is the simplest whole-number ratio of atoms in a molecule or formula unit called?
1778
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미해결 질문
A molecule's molecular formula and its empirical formula always share the same chemical properties
1425
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객관식
A hydrocarbon produced 0.0100 mol of carbon and 0.0150 mol of hydrogen during combustion. What is the empirical formula of the hydrocarbon?
812
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객관식
What is the empirical formula for a compound that contains 17.34% hydrogen and 82.66% carbon by mass?
120
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객관식
What is the empirical formula of $H_{2} {(N O_{3})}_{2}$ ?
50
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객관식
Which of the following is the empirical formula for a pentose sugar?
92
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객관식
Which of the following chemical formulas is already in its empirical formula?
97
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객관식
Which of the following compounds has the empirical formula CH2O?
172
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객관식
A compound contains 29% Na by mass. If the only other element present is Cl, what is the empirical formula of the compound?
98
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객관식
Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.
890
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객관식
Which pair of substances has the same empirical formula?
94
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객관식
Which of the following is an example of an empirical formula?
107
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객관식
What is the empirical formula of $C_{3} H_{6}$ ?
78
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객관식
A compound contains 31.2% calcium, 28.6% sulfur, and 40.2% oxygen by mass. What is the empirical formula of this compound?
101
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