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Answer:Option B) 63.55 amu
Explanation:To find the average atomic weight of the two isotopes of copper that exist in nature we can use the below formula;
Average atomic mass = ∑ (isotope(s) x abundance)
Therefore, we have the given values of atomic masses of two copper isotopes are 62.93 u and 64.93 u, respectively. They have natural abundance as 0.692 and 0.368, respectively,
On substituting the above values, we get,
Average atomic mass = (62.93 x 0.692) isotope 1 of Cu + (64.93 x 0.308) isotope 2 of Cu
Average atomic mass = 43.54 + 19.99 = 63.538 ~ 63.55
Therefore, the average atomic mass of Cu will be 63.55 amu.
Answer:
it is called the prevailing westerlies
Explanation:
I think the best answer is C. Since the light energy would be the sun and chemical energy being the glucose that feeds the plant.
The protons come from water. Sulfur oxides dissolve in water to form sulfurous and sulfuric acids, and nitrogen oxides dissolve to form nitrous and nitric acids.