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A gas jar contains 7.2 xx 10^(20) molecu...

A gas jar contains `7.2 xx 10^(20)` molecules of `NH_(3)` gas. Find :
weight in grams

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To find the weight in grams of `NH3` gas given `7.2 x 10^20` molecules, we can follow these steps: ### Step 1: Calculate the number of moles of `NH3` We know that the number of molecules is related to the number of moles by Avogadro's number, which is approximately `6.022 x 10^23` molecules per mole. The formula to find the number of moles (n) is: \[ n = \frac{\text{Number of molecules}}{\text{Avogadro's number}} \] ...
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