Term
| Looking for moles, given mass |
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Definition
1. Find the formula mass
2. Divide the given mass by the formula mass |
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Term
| Looking for atoms, given moles (one unit only!!) |
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Definition
| Multiply the number of moles by Avogadro's number. |
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Term
| Looking for atoms, given moles (more than one unit) |
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Definition
1. Multiply the moles by the unites of the element
2. Multiply the product of step 1 by Avogadro's number. |
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Term
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Definition
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Term
| Looking for molecules, given mass |
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Definition
| Multiply the moles by Avogadro's number |
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Term
| Looking for moles, given molecules |
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Definition
| Divide the molecules by Avogadro's number |
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Term
| Calculating percent composition |
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Definition
1. Find the formula mass
2. Divide the mass or percent of one element by the formula mass, and multiply by 100.
3. Subtract step 2 from 100 to get the percent composition of the other element(s). |
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Term
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Definition
1. For each element, divide the given mass or percent by that elements atomic mass.
2. Divide the products of step 1, putting the larger number on top.
3. Take the result and apply it to the element with the larger number of moles |
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Term
| Finding molecular formula |
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Definition
1. Find the empirical formula
2. Find the formula mass of the empirical formula
3. Divide the gram molecular mass (given) by the formula mass
4. Multiply the product by the empirical formula. |
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Term
| Looking for mass, given moles |
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Definition
1. Find the formula mass
2. Multiply the formula mass by the number of moles |
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