If air has a density of 1.225 kg/m3, what is the mass of the air in a hot air balloon that has a volume of 2,800 m3?

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 2800 m³

density = 1.225 kg/m³

We have

mass = 2800 × 1.225

We have the final answer as

Hope this helps you

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.