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coldgirl [10]
2 years ago
8

Generally, does the size of a radioactive sample affect half-life?

Chemistry
2 answers:
lions [1.4K]2 years ago
8 0
The quantity of radioactive nuclei at any given time will decrease to half as much in one half-life.

It is impossible to predict when an individual radioactive atom will decay
Natasha2012 [34]2 years ago
4 0

Answer:

The quantity of radioactive nuclei at any given time will decrease to half as much in one half-life.

Explanation:

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What is the molecular formula of a compound that has a molecular mass of 54 and the empirical formula is C2H3
iren [92.7K]
To find the molecular formula from the empirical formula, you need to find a multiple (x) that will give you the molar mass of the compound which in the question is 54 g/mol.

If C₂H₃ is the empirical formula
 molar mass of empirical formula = (12 × 2) + (1 × 3) g/mol
                                                     =  27 g/mol
let x = multiple
let molecular formula = C₂ₓ H₃ₓ

            multiple = molecular mass ÷ empirical mass
                         =  54 g/mol ÷  27 g/mol
                         =  2


If molecular formula = C₂ₓ H₃ₓ

then molecular formula = C₂₍₂₎H₃₍₂₎

                                      = <span>C₄H</span>₆

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3 years ago
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