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Hitung massa yang terdapat dalam 200 mL larutan urea 0,4 M! (Mr urea= 60 gram/mol)

Hitung massa begin mathsize 14px style C O open parentheses N H subscript 2 close parentheses subscript 2 end style yang terdapat dalam 200 mL larutan urea 0,4 M! (Mr urea= 60 gram/mol)

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell M subscript C O open parentheses N H subscript 2 close parentheses subscript 2 end subscript end cell equals cell begin inline style m over Mr end style cross times begin inline style fraction numerator 1000 over denominator V space open parentheses mL close parentheses end fraction end style end cell row cell 0 comma 4 space M end cell equals cell begin inline style m over 60 end style begin inline style cross times end style begin inline style 1000 over 200 end style end cell row m equals cell begin inline style 24 over 5 end style end cell row blank equals cell 4 comma 8 space gram end cell end table end style


Jadi, massa begin mathsize 14px style C O open parentheses N H subscript 2 close parentheses subscript 2 end style adalah 4,8 gram.

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