The combustion of hexane is given by the following reaction. 2 c6h14 + 19 o2 12 co2 + 14 h2o the enthalpy of reaction is −4163.0 kj/mol. how much energy (in joules) will be released if 62.30 grams of hexane is burned. (molar mass of hexane = 86.20 g/mol).

3'008,757.5 Joules

Explanation:

First, calculate the hexane (Hx) moles:

Then, multiply the number of moles by the enthalpy of reaction (the enthalpy of reaction is given by mole of reactant):

Change to Joules:

It has negative sign due to its released energy, so the answer should be positive: 3'008,757.5 J

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

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.