Skip to main content
Ch.3 - Mass Relationships in Chemical Reactions
Chapter 3, Problem 53

What is the molecular weight of cholesterol if 0.5731 mol weighs 221.6 g?

Verified Solution

Video duration:
1m
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Molecular Weight

Molecular weight, or molar mass, is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic weights of all atoms in a molecule. Understanding molecular weight is essential for converting between moles and grams, which is crucial in stoichiometry and chemical calculations.
Recommended video:
Guided course
03:45
Weight Conversion Example

Moles

A mole is a unit in chemistry that represents a specific quantity of particles, typically atoms or molecules, equivalent to Avogadro's number (approximately 6.022 x 10²³). The concept of moles allows chemists to count and relate the mass of substances to the number of particles, facilitating calculations in chemical reactions and formulations.
Recommended video:

Mass and Moles Relationship

The relationship between mass and moles is defined by the equation: mass (g) = moles × molecular weight (g/mol). This relationship allows for the conversion between the mass of a substance and the number of moles present. In the context of the question, knowing the mass and moles of cholesterol enables the calculation of its molecular weight.
Recommended video:
Guided course
01:29
Mass and Moles Conversion