If I had 15cm³ of oxygen gas what volume of chlorine gas would I need in order to have an equal number of moles at RTP?

pure substance: iron,copper

impure substance: water,charcoal

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

idk what is it? is this a question that you know the answer or u dont