Chemistry, 25.04.2020 20:49 abbypark0804

3) Which pair of formulas represents the empirical formula and molecular
formula for a certain (the same) compound?

A. CH4 and C2H6

B. CH2O and C4H6O

C. O2 and O3

D. C3H403 and C6H8O

Answers: 3

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Answers

The pair of formulas that represents the empirical formula and molecular formula for the same compound is C₃H₄O₃ and C₆H₈O₆.

Empirical formula of a chemical compound is the simplest whole number ratio of atoms present in that particular compound. This formula does not represent the total number of atoms present in the compound.

Molecular formula of a chemical compound gives the total number of atoms of each element present in that compound.

From the given options, the pair of formulas that represents the empirical formula and molecular formula for the same compound is:

empirical = C₃H₄O₃molecular = 2(C₃H₄O₃) = C₆H₈O₆

Learn more about empirical and molecular formulas here: link

Answer from: clairefc2019

The answer to your question is maybe letter D, but the last oxygen needs a number 6.

Explanation:

The empirical formula gives the actual elements that form part of a molecule but not the total numbers.

The molecular formula gives the total number of atoms of each element in a molecule.

We must factor the molecular formula to know if a formula is the empirical formula of that.

A. CH₄ C₂H₆ = 2(CH₃) these are not empirical molecular formulas

B. CH₂O C₄H₆O these are not empirical-molecular formulas

C. O₂ O₃ these are not empirical-molecular formulas

D. C₃H₄O₃ C₆H₈O these are not empirical-molecular formulas

the last oxygen needs a number 6 to be

the answer.

Answer from: Quest

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

Answer from: Quest

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.

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3) Which pair of formulas represents the empirical formula and molecular
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