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Chemistry: The Central Science | 13th Edition | ISBN: 9780321910417 | Authors: Theodore E. Brown; H. Eugene LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward; Matthew E. Stoltzfus
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Solved: A 53.8-mg sample of sodium perchlorate contains

Chapter , Problem 21.89

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QUESTION:

A 53.8-mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0 amu). If 29.6% of the chlorine atoms in the sample are chlorine-36 and the remainder are naturally occurring nonradioactive chlorine atoms, how many disintegrations per second are produced by this sample? The half-life of chlorine-36 is 3.0 * 105 yr.

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QUESTION:

A 53.8-mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0 amu). If 29.6% of the chlorine atoms in the sample are chlorine-36 and the remainder are naturally occurring nonradioactive chlorine atoms, how many disintegrations per second are produced by this sample? The half-life of chlorine-36 is 3.0 * 105 yr.

ANSWER:

Problem 21.89A 53.8-mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic massis 36.0 amu). If 29.6% of the chlorine atoms in the sample are chlorine-36 and the remainderare naturally occurring nonradioactive chlorine atoms, how many disintegrations per second areproduced by this sample The half-life of chlorine-36 is 3.0 x 10 yr. 5 Step-by-step solution Step 1 of 4 ^The given mass of sodium perchlorate (NaClO ) is 53.84.The molar mass of sodium perchlorate is 122.44 g/mol.Calculate the moles of NaClO using4ts mass given and the molar mass as shown below: massMoles of NaClO = 4 molar mass 53.8mg x 1g 1000mg = 122.44g/mol = 4.39 x 10 mol

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