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Calculate the number of atoms in each of the following a. `52 mol` of `He` b. `52 u` of `He` c. `52 g` of `He` |
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Answer» a. `1` mol of `He=6.022xx10^(23)` atoms `:. 52 mol` of `He=52xx6.022xx10^(23)` atoms `=3.131xx10^(25)` atoms b. `1` atom of `He=4 u` of `He` `4 u` of `He=1` atom of He `:. 52 u` of `He=1/4xx52` atoms`=13` atoms c. `1` mole of `He=4 g=6.022xx10^(23)` atoms `:. 52 g` of `He=(6.022xx10^(23))/4xx52` atoms `=7.8286xx10^(24)` atoms |
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