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zaya4
@zaya4
June 2023
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10. Знайти масові частки елементів в А) NH3
Б) Fe(OH)3
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mashka7777777
А) Mr (NH3) = 14+1*3=17
W (N) = 14/17 * 100% = 82%
W (H) = 3/17 * 100% = 18%(округлила)
Б) Mr (Fe(OH)3) = 56+16*3+1*3=56+48+3=107
W (Fe) = 56/107 * 100% = 52%
W (O) = 48/107 * 100% = 45%(округлила)
W (H) = 3/107 * 100% = 3%(округлила)
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Answers & Comments
W (N) = 14/17 * 100% = 82%
W (H) = 3/17 * 100% = 18%(округлила)
Б) Mr (Fe(OH)3) = 56+16*3+1*3=56+48+3=107
W (Fe) = 56/107 * 100% = 52%
W (O) = 48/107 * 100% = 45%(округлила)
W (H) = 3/107 * 100% = 3%(округлила)