What is the atomic mass of lithium if 7.42% of its atoms have the mass of 6.02amu and 92.58% of its atoms have the mass of 7.02amu?

Answer 1

#"6.9458 amu"#

Consider 10000 atoms of #"Li"#.
#742 # of them would have mass #6.02#. #9258# of them would have mass #7.02#.
Hence the total mass of these #"10000 Li"# atoms would be
#(742xx6.02)+(9258xx7.02)=69458#
#therefore# #"1 Li"# atom on average would have mass of #69458/10000="6.9458 amu"#.
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Answer 2

The atomic mass of lithium is 6.94 amu.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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