An element has two isotopes, A and B, with mass numbers of 32.0 and 33.0 respectively. The relative atomic mass is 32.3. The per
centage abundance of the two isotopes is:
a) A - 20% B - 80%
b) A - 25% B - 75%
c) A - 80% B - 20%
d) A - 70% B - 30%
e) A - 50% B - 50%
2 answers:
Answer:
d) A - 70% B - 30%
Explanation:
If x is the abundance of A, and 1−x is the abundance of B, then:
x (32.0) + (1−x) (33.0) = 32.3
32x + 33 − 33x = 32.3
33 − x = 32.3
x = 0.7
The abundance of A is 70%, and the abundance of B is 30%.
You might be interested in
the number of Valence electrons remains the same
Answer:
Homogenous mixture
Explanation:
Homogenous mixtures like ice cream appear to be uniform, and you cannot see their individual components.
I think the answer is number D…. I think
Answer:
<em>fractional distillation</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>most common method for air separation</em><em>.</em>
Answer:Doing your momveryhardrn
Explanation:
She is visciously suckingmynuts