How many moles of methane(ch4) are in 7.31*10^25 molecules

There are 121.37 moles of methane(CH₄) in 7.31*10²⁵ molecules

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023 * 10²³ particles per mole. The Avogadro number applies to any substance.

Then a rule of three can be applied as follows: if 6,023*10²³ molecules are in 1 mole of CH₄, 7.31*10²⁵ molecules will be present in how many moles of the substance?

moles=121.37

There are 121.37 moles of methane(CH₄) in 7.31*10²⁵ molecules

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.