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Chapter 3: Problem 62

What does an element's molar mass tell you about the element?

Short Answer

Expert verified
An element's molar mass tells you about the mass in grams of one mole of that element, and it's numerically equal to the element's atomic mass expressed in atomic mass units. It allows to convert between mass and number of moles of the element, enabling us to interact easily with the atomic scale.

Step by step solution

01

Understand the concept of molar mass

The molar mass of an element is defined as the mass in grams of one mole (6.022 x \(10^{23}\)) atoms of that element. A mole is an Avogadro's number of anything, just like a dozen is 12 of anything.
02

Connect molar mass to atomic mass

The molar mass of an element is numerically equal to the element's atomic mass expressed in atomic mass units (amu). For instance, One mole of carbon atoms has a mass of about 12g, which corresponds to its atomic mass of 12 amu.
03

Understand the value of knowing the molar mass

Knowing the molar mass of an element allows to convert between mass and number of moles of the element, which is useful in dimensional analysis and stoichiometry. It provides a bridge between the atom and the macro world enabling us to talk about atoms and molecules in terms we understand.

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