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26 September, 06:42

An alkane used as a lubricant contains 25 carbon atoms. How many hydrogen atoms are present in its structure?

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  1. 26 September, 10:35
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    52

    Explanation:

    Alkanes are saturated hydrocarbons, that is, they are formed just by carbon and hydrogen atoms bonded through single covalent bonds. The general formula for alkanes is CnH2n+2.

    If n = 25 (25 carbon atoms), 2n + 2 = 2 * 25 + 2 = 52. There are 52 hydrogen atoms in the structure and the alkane has the formula C₂₅H₅₂.
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