Answer: The correct answer is microscopic hairs.
Explanation:
For avoid the sinking, the legs of the water strider have a thousands of microscopic hairs with tiny groves. In consequence, the presence of this huge amount of microscopic hairs increases the water resistance of the water strider's feets, resulting in an increase of the general buoyancy of the water strider.
Answer:
2.5 moles
Explanation:
Number of moles = MassMolar mass
= 80⋅g32.06⋅g⋅mol−1 = ??mol
Note that sulfur likely exists in its elemental state as S8. I am perfectly justified in treating sulfur as S. The number of sulfur atoms is the same in each case.
Everything is made out of some matter that originates from space
Given
Mass of K2O2 = 1.0 g
Molar mass of K2O2 = 110.0 g/mol
Calculate the # moles of K2O2
# moles = mass of K2O2/molar mass
= 1.0 g/110.0 g.mol-1 = 0.0091 moles
1 mole of K2O2 contains 2*6.023*10^23 atoms of oxygen
Therefore, 0.0091 moles of K2O2 will correspond to:
= 0.0091 moles * 2* 6.023*10^23 atoms/1 mole
= 1.096 * 10^24 atoms of oxygen
Answer:
a new discover a new theory
