Предмет: Химия, автор: scherbinarimma

визначте молекулярну формулу речовини яка містить 83,72% карбону і 16,28% гідрогену а молекулярна маса цієї речовини дорівнює 86

Ответы

Автор ответа: borodimiiru

1

n(C) = 100 * 12 / 83,72 * 86 = 6

n(H) = 100 * 1 / 16,28 * 86 = 14Отже, молекулярна формула речовини - C6H14.

Перевірка:

M(C6H14) = 6 * 12 + 14 * 1 = 86

scherbinarimma: А дано як буде?

borodimiiru: Масова частка карбону в речовині становить 83,72%, тоді масова частка водню становить 100% - 83,72% = 16,28%. Відносна атомна маса карбону становить 12, а відносна атомна маса водню становить 1.

scherbinarimma: дякую

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