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22 May, 14:26

What is the number of nitrogen atoms in 12g aluminium nitrate, Al (NO3) 3?

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  1. 22 May, 16:14
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    The 3 outside means to multiply the inside by that number. AL (NO2) 3 has

    1 N inside

    1 x 3 = 3 nitrogen atoms

    The molar mass of Al (NO3) 3 = 212.996 g/mol

    nitrogen is 14 g/mol and is 19.7% if the molar mass

    19.7% of 12 g = 2.354g

    2.354/14 = 0.196 N
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