Chemistry Homework Assistance

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d) The heat of hydrogenation of benzene is -49.8Kcal/mol while that of 1,4- cyclohexadiene is -59.3Kcal/mol Calculate the [IH for conversion of benzene to 1,4 -cyclohexadiene. (4 Marks)

c) Give the IUPAC names of the following i. I ii. I (1.................................................................... iv. AC=CH_(2) (8 Marks)

Avogadro number represents A. the number of molecules contained in one mole of molecules B. the number of atoms contained in 6,02times 10^23g of a substance C. the number of protons contained in an atom D. the number of protons, neutrons, and electrons contained in 1 g of atoms E. the number of molecules contained in 100 g of a substance

) Tentukan pH campuran 1,12 liter gas NH_(3) (pada keadaan standar) dan 1 liter larutan NH_(4)Cl 0,2M(K_(b)NH_(3)=1,8times 10^-5)

S.An alkali may be defined as A. Any chemical the is corrosive B. A base that reacts with acids only C. A soluble base D. An insoluble base