A because magma is underground
Answer:
B it is decomposition reaction
Explanation:
In decomposition reaction compound is broken into two or other elements
"The electromagnetic spectrum<span> consists of all the different wavelengths of ... At a temperature of 37 degrees C, our bodies radiate with a </span>peak intensity<span> near ... object </span>will<span> be larger (more </span>intense) thanwill the peak<span> of the curve for a cooler object. ... Space's "</span>Star<span> Light, </span>Star<span> Bright", we </span>have<span> made the scale of the </span>intensity<span> axis"</span>
Answer:
43%
Explanation:
As the problem says that the antimony has only two isotopes, lets call each isotope the following:
x=abundance of isotope 121Sb
1-x=abundance of isotope 123Sb
And
Atomic weight of antimony = (isotopic mass of 121Sb*x)+(isotopic mass of 123Sb*(1-x))
Replacing values we have:
Solving for x:
it means that the abundance of the isotope 121Sb is 57% and the abundance of isotope 123Sb is 43%