The form three students were given acetic anhydride of molar weight 102.09(g/mol) and the mass of acetic anhydride is 3.24g and the number of moles were 31.7(mmol). Calculate it's density (g/mL) and it's volume (mL).​

b) mutualism

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substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.