Why are cis and trans isomers of succinic acid impossible?

            Due to the absence of double bond in Succinic Acid.

Explanation:

                  cis-trans Isomerism also known as Geometrical Isomerism is a type of isomerism in which isomers have same molecular formula and structural formula but differ in respect of arrangement of groups or atoms about the double bond.

                 Therefore, a double bond is the main requirement for such isomerism process.

Example:

              cis and trans Butene. In cis-Butene both methyl groups are located on the same side. While, in trans-Butene both methyl groups are in opposite directions (Figure red).

Result:

          As shown in figure, succinic acid (blue) is lacking a double bond. Therefore, it fails to show cis-trans isomerism.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;