Joan writes four numbers on the board in standard form, and then she writes their scientific notation. The table below shows her numbers.
Row
1
Joan's Numbers
Number in standard form
7,100
-0.000041
-39.000
120.000
2.
Number in scientific notation
7.1 x 10
4.1 x 10-5
-3.9 x 104
1.2 x 106
3
4
In which row of the table did Joan make a mistake in writing the scientific notation?
1
2
3
4

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.