GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the atomic mass of carbon?
A
C
B
6 amu
C
12.011 amu
D
12 amu
Explanation: 

Detailed explanation-1: -On the periodic table the mass of carbon is reported as 12.011 amu. No single carbon atom has a mass of 12.011, but in a handful of C atoms the average mass of a carbon atom is 12.011.

Detailed explanation-2: -Example: Carbon (atomic mass = 12.01)-1 mole of Carbon weighs 12.01 grams. This means that 6.022x1023 carbon atoms (or molecules) weights 12.01 grams.

Detailed explanation-3: -On the periodic table the mass of carbon is reported as 12.01 amu. This is the average atomic mass of carbon. No single carbon atom has a mass of 12.01 amu, but in a handful of C atoms the average mass of the carbon atoms is 12.01 amu.

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