How many moles of hexane must burn to produce 18 moles carbon dioxide

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

The image below shows a weather service map.. i’m not sure if is correct

Is ice cream a mechanical mixture or solution why?