Answer: 0.156 mol
Explanation:
To find the moles of 17.2 g K₂S, we need to know the molar mass to convert.

It’s a or b i think it’s b
Fe needs to have a positive charge of +3 to balance out -3 Cl
Both are mainly composed of droplets of condensed water
They are described through the use of four physical properties or macroscopic characteristics: pressure, volume, number of particles (chemists group them by moles) and temperature.