Answer:
Choice B
They are polar climates because they are dry
and cold
<u>Answer:</u> The percentage abundance of Ab-130 and Ab-132 isotopes are 23.40% and 76.60% respectively.
<u>Explanation:</u>
Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Formula used to calculate average atomic mass follows:
.....(1)
Let the fractional abundance of Ab-130 isotope be x and that of Ab-132 isotope be (1-x)
- <u>For isotope 1 (Ab-130) :</u>
Mass of isotope 1 = 129.6785 amu
Fractional abundance of isotope 1 = x
- <u>For isotope 2 (Ab-132) :</u>
Mass of isotope 2 = 131.3456 amu
Fractional abundance of isotope 2 = (1 - x)
Putting values in equation 1, we get:
Percentage abundance of Ab-130 isotope =
Percentage abundance of Ab-132 isotope =
Hence, the percentage abundance of Ab-130 and Ab-132 isotopes are 23.40% and 76.60% respectively.
Answer: They are extended or controlled release medications
Explanation:
The condenser
This part of the microscope concentrates light
I don’t really know this but I think