Question
What is the molecular mass of a substance, each molecule of which contains 9 carbon atoms, 13 hydrogen atoms and 2.33×10−23 g of another component?
Answer: Option A
:
A
The molecule has C, H and other component. Mass of 9 C atoms = 12×9=108 amu
Mass of 13 H atoms = 13×1=13 amu value of 1 amu
Mass of other component = (2.33×10−23)1.66×10−24
∴ Total mass of one molecule = 108+13+14.4=135.04 amu
∴ Mol. Mass of substance = 135.04
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:
A
The molecule has C, H and other component. Mass of 9 C atoms = 12×9=108 amu
Mass of 13 H atoms = 13×1=13 amu value of 1 amu
Mass of other component = (2.33×10−23)1.66×10−24
∴ Total mass of one molecule = 108+13+14.4=135.04 amu
∴ Mol. Mass of substance = 135.04
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