A Compound Contains 40

question 69

Multiple Choice

A compound contains 40.0% C,6.71% H,and 53.29% O by mass.The molecular weight of the compound is 60.05 amu.The molecular formula of this compound is ________.

• A)C₂H₄O₂
• B)CH₂O
• C)C₂H₃O₄
• D)C₂H₂O₄
• E)CHO₂

Comprehend the logarithmic nature of the pH scale and how it quantifies the concentration difference between acidic and basic solutions.

Identify the significance of color changes in detecting the presence and concentration of specific substances in chemical tests.

Recognize the importance of pH in biological systems and how it affects cellular function.

Understand the concept of continuous random variables and their probability measures.

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