Explanation of how to find the molar mass of Ca(OH)2: Calcium hydroxide.
A few things to consider when finding the molar mass for Ca(OH)2:
- make sure you have the correct chemical formula.
- always include the units for molecular weight (grams/mole).
- make sure you do the math right - follow the order of operations.
Watch: Molar Mass in Three Easy Steps: youtu.be/o3MMBO8WxjY
Note that molecular weight, molar mass, and gram formula mass are essentially the same concept.
Periodic Table Image from: commons.wikimedia.org/wiki/File:Periodic-table.jpg
Mole & Stoichiometry Playlist: youtube.com/playlist?list=PLZR1BGWBaZ1zrlxkYJDNW_HWdUib0Q8Pa
Finding the Molar Mass (sometimes called Molecular Weight although the units are different) of a compound is a essential skill for the chemistry topic of stoichiometry and the first step in converting from moles to grams (or grams to moles).
For more chemistry help visit Breslyn.org .
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Using the Periodic Table look up the atomic weight of each of the elements in Ca(OH)2. In most cases is it appropriate to round to two decimal places when finding the molecular weight for Ca(OH)2 (unless you were told to do otherwise). For molar mass for Ca(OH)2 (molar mass and molecular weight are the same thing) just add the atomic weights.
Note that for Ca(OH)2 you need to be sure and apply the subscript 2 to both the O and H. In other words you have two oxygen atoms and two hydrogen atoms.
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