A handbook lists the density of lead as 11.3 g/mL. Several groups of students are attempting to determine the density of a lead weight by various methods. Calculate the average density measured by each group, and the percentage error in each average. Group 1 Group 2 Group 3
Measured Trial 1 12.7 11.5 10.9
Densities Trial 2 11.2 11.4 11.3
(g/mL) Trial 3 10.3 11.4 11.1
Which group was most accurate?
a. Group 1
b. Group 2
c. Group 3
Which group was most precise?
a. Group 1
b. Group 2
c. Group 3

i believe the answer is a.

its first and third is your answer i did the qustion the fourth isnt right

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.