A sample of 1.00 moles of oxygen at 50°C and 98.6 kPA occupies what volume?

27.3L

Explanation:

Looking at the parameters given;

Number of moles (n)= 1.00 moles

Temperature (T) =50° +273= 323K

Pressure (P)= 98.6KPa or 0.97 atm ( to obtain this, divide 98.6×10^3/101325)

R= 0.082 L.atmK-1mol-1

Then we apply the ideal gas equation

PV=nRT

V= nRT/P

V= 1.00×0.082×323/0.97

V= 27.3L

The volume occupied by the gas is 27.25 L.

Explanation:

The ideal gas equation dictates that the kinetic energy is directly proportional to the temperature in an ideal gas.

And an ideal gas is a hypothetical gas made up of point particles with no attraction or repulsion between them.

The ideal gas equation is: PV = nRT

To find the volume occupied by a gas, the values of the variables Temperature (T), Pressure (P), a constant (R: The universal constant of ideal gases), and the number of moles (n) must be taken.

The data they give us is:

Then the variable we want to find is cleared, that is, the volume:

Then the data is placed:

And the answer is given in units of volume:

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

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.