Problem: A compound isolated from the rind of lemons is found to be 88.14 % carbon and 11.86 % hydrogen by mass.The molar mass is determined to be 136.26 g/mol. What is the molecular formula?

FREE Expert Solution

We’re being asked to determine the molecular formula of a compound composed of 88.14 % carbon and 11.86 % hydrogen by mass. This means we need to do the following steps:


Step 1: Calculate the mass and moles of C and H in the compound.

Step 2: Determine the lowest whole number ratio of C and H to get the empirical formula.

Step 3: Get the ratio of the molar mass and empirical mass to determine the molecular formula.


Step 1: The compound is composed of C and H and we’re given the mass percent of C (88.14% C) and H (11.86% H)


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Problem Details

A compound isolated from the rind of lemons is found to be 88.14 % carbon and 11.86 % hydrogen by mass.

The molar mass is determined to be 136.26 g/mol. What is the molecular formula?

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What scientific concept do you need to know in order to solve this problem?

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