I believe that the answer would be A.) grana
Answer:
63.55 amu
Explanation:
The average atomic mass of an element can be calculated by multiplying the decimal abundance of each isotope of that element by the relative atomic mass and summing them up. That is;
Average atomic mass = {atomic mass of isotope 1 × decimal abundance of Isotope 1} + {atomic mass of isotope 2 × decimal abundance of isotope 2}
According to this question, two most abundant isotopes of copper contain 34 and 36 neutrons. The atomic mass of each isotope can be found by adding the no. of neutrons to the atomic number/proton no., which is 29.
Atomic mass of Isotope 1= 34 + 29 = 63
Atomic mass of Isotope 2= 36 + 29 =65
Decimal abundance of each isotope = percentage abundance ÷ 100
Isotope 1 (with 34 neutrons) = 72.5% = 72.5/100 = 0.725
Isotope 2 (with 36 neutrons) = 100 - 72.5 = 27.5% = 27.5/100 = 0.275
Therefore, the average atomic mass
= {63 × 0.725} + {65 × 0.275}
= {45.675} + {17.875}
= 63.55
Hence, the average atomic mass of copper is 63.55 amu
Answer:
The answer is lower-frequency wavelengths. :)
Biodiversity supports biological system efficiency where every specie, regardless of how little, all have a vital part to play. For instance, A bigger number of plant species implies a more prominent assortment of products. More noteworthy species assorted variety guarantees common maintainability for all living things.
Answer:
In the ocean, carbon dioxide reacts with seawater to form carbonic acid, and this results in the ocean pH to drop (becoming acid). When carbon dioxide increases there will be an increase in carbonic acid, thus a huge drop in the pH level causing the water to be more acidic, resulting in the phenomenon called ocean acidification. Ocean acidification result in the oceans' animals inability to form shells and skeletons .
Explanation:
Ocean acidification causes a disruption the oceans' ecosystem,for corals and shelled-marine animals, acidifaction of their shells and skeletons ,make them vulnerable to harsh weathers (storms), and they make not fully recover. This phenomenon may also affect the reproduction and development of other marine animals.
Ocean acidification also have an effect on humans. We get our food from the ocean, and ocean acidification means a decrease in food supply. Due to the death of corals, the tourism sector will also be affected.
