Ask Question
28 November, 16:14

How do you work out the moles of something?

+1
Answers (1)
  1. 28 November, 16:30
    0
    1 mole of a pure substance has a mass equal to its molecular mass expressed in grams.

    This is known as the molar mass, M, and has the units g mol-1

    So 2 moles of a substance would have a mass = 2 x molar mass

    3 moles of a substance would have a mass = 3 x molar mass etc

    This leads to the formula: mass = moles x molar mass

    If we let:

    m = mass of substance in grams,

    n = moles of pure substance,

    M = molar mass of the pure substance in g mol-1

    we can write the equation: m = n x M

    This equation can be rearranged to give the following:

    n = m : M (moles = mass : molar mass)

    M = m : n (molar mass = mass : moles)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “How do you work out the moles of something? ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers