Question
a Find the mass of an ion of (}_{6)^12C^+ in kg. Give your answer to the appropriate number of significant figures . The Avogadro number , L,is 6.022times 10^23mol^-1
Answer
3.4
(237 Votes)
Thomas
Master · Tutor for 5 years
Answer
Explanation
To find the mass (m) of an ion of
, the weight in atomic mass unit (amu) will have to be converted to kilograms (kg). The carbon ion (
) is represented as
which indicates that the atomic mass of the this carbon ion is 12 amu. By definition, one amu is one-twelfth (1/12th) of the mass of a Carbon-12 atom (
). Moreover, one Carbon-12 atom has a mass of approximately
grams, since there are
atoms (which equals Avogadro's number
) in one mole. This gives us
grams. We also need to convert from grams to kilograms as the standard metric unit for mass is kg as norated in the international system (SI) of units. To convert, we need to know that 1 gram is
Kg.