Nitrogen gas, N2, is the only gas generated from the decomposition of an unknown substance. The reaction is run to completion and the gas produced was collected over water at a temperature of 298 K. The total pressure of the gas collected over the water is measured to be 2.25 atm. If the partial pressure of water at this temperature is 0.0351 atm then determine the partial pressure of N2 gas produced. A. 1.80 atm
B. 2.21 atm
C. 2.28 atm
D. 3.10 atm

i think it is true since you can test the answer and can use observations to complete it.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

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.

i believe the answer is three water molecules