Answer:
Explanation:
percentage abundance of third isotope = 100 - ( 78.900 + 10.009)
= 11.091 %
Atomic mass
24.1687 x .789 + 25.4830 x .10009 + 24.305 x .11091
19.069 + 2.5506 + 2.69566
= 24.3153 amu
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Igneous rocks from cooling magma<span>. </span>Granite<span> is an igneous rock </span>formed<span> from </span>magma<span>that </span>cooled slowly<span> underground. As the </span>magma slowly cools<span>, large mineral crystals form.
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