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| A weighted average mass of the atoms of an element; e.g. Atomic mass of Cl = 35.45, calculated from two isotopes: Cl-35, Cl-36 |
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Definition
Found by adding all the atomic masses of an element. e.g. water, H2O: molecular mass = 18
Equation: 2(1) + 16 = 18 |
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| 6.02 X 1023 items; can be anything: atoms, elephants, marshmallows. |
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Definition
| The number of atoms or formula units in x grams of an element or molecule, where x is the atomic or molecular mass. Always equal to 6.02 X 1023 |
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| How many molecules in 0.5 moles of CuNO2? |
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| How many grams in 5 moles of ammonia (NH3)? |
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| How many moles in 50 grams of Hydrogen gas (H2)? |
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