Предмет: Химия, автор: DAKAxexexe

неизвестное вещество состоит из углерода, водорода и кислорода. относительная молекулярная масса вещества 30. установите его формулу

Ответы

Автор ответа: valinafrei19

7

Ответ:

СН2О формальдегид

Объяснение:

М(СН2О)=12+1×2+16=30

valinafrei19: г/моль* забыла указать

DAKAxexexe: та ничего:) спасибо, только скажи пожалуйста, а почему именно в таком порядке? это как то зависит от чего то?

DAKAxexexe: то есть, я потом сама додумалась. но только в другом порядке записала

valinafrei19: нет смотри масса углерода=12 масса водорода=1 и масса кислорода=16 если это все сложить будет 29. мы добавим 1 атом водорода т.к масса 1 атома=1 в итоге получим "СН2О" порядок такой всегда

valinafrei19: это углеводорода опираяна на название соединения углерод потом водород потом кислород

valinafrei19: ы*

valinafrei19: опираясь на*

DAKAxexexe: ааааа, спасибо

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