2kg of saturated r-134a vapour at 30 °c is compressed adiabatically in a piston. after compression, the temperature is 80 °c and the pressure is 1600 kpa. (a) (4 marks) how much work, in kj, is done during this process? is it work into, or out of, your system? draw your system and state your assumptions. (b) (2 marks) was the compression reversible?

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.

the answer is minerals.

no starving yourself won't it will make you lose more weight what you need to do is find out what foods make you gain weight like bread and meats with fat on