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yanalaym [24]
2 years ago
15

Age

Chemistry
1 answer:
cupoosta [38]2 years ago
5 0

Answer:

Option (2)

Explanation:

Since the amount of each sample is the same, we are looking for the metal with the greatest density, which is copper.

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C-12 and C-13 are naturally-occurring isotopes of the element carbon. C-12 occurs 98.88% of the time and C-13 occurs 1.108% of t
Veseljchak [2.6K]

Answer:

c) (12×0.9889) + (13×0.01108)

Explanation:

Given data:

Percentage of C-12 = 98.89%

Percentage of C-13 = 1.108%

Atomic mass = ?

Solution:

98.89/100 = 0.9889

1.108/ 100 = 0.01108

Atomic mass = (12×0.9889) + (13×0.01108)

Atomic mass = (11.8668 + 0.144034)

Atomic mass = 12.01084

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lesantik [10]
True. 

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Goryan [66]

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Which of the following is a characteristic property of noble gases? A. They only react with each other B. They do not react chem
tresset_1 [31]

Answer:

B.They do not react chemically

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