Question

Compound 2 contains 2.0g of hydrogen and 32.0g oxygen. What is the percent compound of each element?

Answer 1

Note down the formula below

`\boxed{\sf Mass\%\;of\; element=(Mass\:of\:the\: element)/(Mass\;of\:the\: compound)* 100}`

Mass of the compound

`\\ \sf\longmapsto 32+2=34g`

Mass % of Hydrogen:-

`\\ \sf\longmapsto (2)/(34)* 100`

`\\ \sf\longmapsto (1)/(17)* 100`

`\\ \sf\longmapsto 5.8\%`

Mass % of Oxygen:-

`\\ \sf\longmapsto (32)/(34)* 100`

`\\ \sf\longmapsto (16)/(17)* 100`

`\\ \sf\longmapsto 94.2\%`