`6.0g` he and `12.0 g` Ne molecules both having average velocity `4 xx 10^(2) ms^(-1)` are mixed Calculate kinetic energy per mo1 of the mixture .

Explanation

To solve the problem, we need to calculate the kinetic energy per mole of a mixture of helium (He) and neon (Ne) gases. We will follow these steps:

### Step 1: Calculate the number of moles of each gas.
- For helium (He):
- Given mass = 6.0 g
- Molar mass of He = 4 g/mol
- Number of moles of He = mass / molar mass = 6.0 g / 4 g/mol = 1.5 moles

...