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Massa rata-rata 1 atom unsur X adalah gram. Berapa...

Massa rata-rata 1 atom unsur X adalah begin mathsize 14px style 2 comma 326 cross times 10 to the power of negative sign 23 end exponent end style gram. Berapa massa atom relatif begin mathsize 14px style open parentheses A subscript r close parentheses end style unsur X, jika diketahui massa 1 atom C-12 adalah begin mathsize 14px style 1 comma 99268 cross times 10 to the power of negative sign 23 end exponent end style gram? space

Jawaban:

begin mathsize 14px style A subscript r X equals fraction numerator massa space rata bond rata space 1 space atom space X over denominator 1 over 12 cross times massa space 1 space atom space C minus sign 12 end fraction A subscript r X equals fraction numerator 2 comma 326 cross times 10 to the power of negative sign 23 end exponent space g over denominator 1 over 12 cross times 1 comma 99268 cross times 10 to the power of negative sign 23 end exponent space g end fraction italic A subscript italic r italic X bold equals bold 14 bold comma bold 007 bold space end style
 

Jadi, massa atom relatif unsur X adalah 14,007.space

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