Grams (Mass) Chemistry Example 1

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Example 1

easy
Convert 2.502.50 moles of sodium chloride (NaCl) to grams. (Molar mass of NaCl = 58.44 g/mol58.44\,\text{g/mol})

Solution

  1. 1
    Use the relationship: mass (g) = moles × molar mass.
  2. 2
    m=2.50 mol×58.44 g/molm = 2.50\,\text{mol} \times 58.44\,\text{g/mol}.
  3. 3
    m=146.1 gm = 146.1\,\text{g}.

Answer

146.1 g of NaCl146.1\,\text{g of NaCl}
Grams are the standard mass unit used in laboratory chemistry. The molar mass serves as the conversion factor between moles (the counting unit) and grams (the measurable unit on a balance).

About Grams (Mass)

A gram (g) is the fundamental unit of mass in chemistry, defined as one thousandth of a kilogram.

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More Grams (Mass) Examples

Example 2 medium

How many moles are in [formula] g of sulfuric acid ([formula])? How many molecules does this represe

Example 3 medium

What mass in grams of iron is needed to provide [formula] atoms of iron? (Fe = [formula])

Example 4 hard

In the reaction [formula], calculate the mass in grams of [formula] produced from [formula] g of alu

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Related Concepts

MoleMolar Mass