How many liters of carbon dioxide will be formed from the decomposition of 14.1g of calcium carbonate (at stp)?

Firstly,  according to Ideal Gas Law the volume of 1 mole of a gas at Standard Temperature and Pressure (STP) is 22.4 , ie the value of the molar volume (Vm) is 22.4 /mol.

From the reaction, it can be seen that  and   have the following amount of substance relationship:

From the relationship we can determinate moles of :

Finally, we can calculate the volume of formed CO2:

V( )=nxVm=0.141x22.4=3.16

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

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.