The tilt of the earth provides the earth with seasons. As the earth revolved around the sun different portions (northern or Southern Hemisphere) is exposed more directly to the suns radiation, thus it is hotter in those regions. (Why the United States experiences winter in December but Australia experience summer in December.)
I THINK 18 OR 21 I AM SORRY IF I AM WRONG BRO
27.6 - 22.3 = 5.3; you simply subtract the old density from the new density.
Answer:
the smallest particle of a chemical element that can exist.
Explanation:
1.0 mole ---------- 6.02x10²³ molecules
4.5 moles -------- ?
4.5 * 6,02x10²³ / 1.0
= 2.709x10²⁴ molecules units
