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Phoenix [80]
3 years ago
12

Each of the following reactions is incomplete. Match each of the following particles with the correct reaction in order to compl

ete the equation.

Chemistry
1 answer:
kiruha [24]3 years ago
4 0

Answer:

1. Option A. Beta decay minus 0 -1e

2. Option B. Alpha 4 2He

3. Option A. Beta decay minus 0 -1e

Explanation:

1. 66 29Cu is undergoing beta decay minus since it produces a daughter nuclei having the same mass number and the atomic number increased by 1 i.e 66 30Zn

2. 238 92U is undergoing alpha decay since the daughter nuclei produced has a decrease of 4 in the mass number and a decrease of 2 in the atomic number ie 234 90Th

3. 14 6C is undergoing beta decay minus since the daughter nuclei produced has the same mass number and the atomic number increased by 1 i.e 14 7N

Please see the attached photo for more details

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Which of the following gives the molarity of a 17.0% by mass solution of sodium acetate, CH 3COONa (molar mass = 82.0 g/mol) in
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Answer:

The molarity of this solution is 2.26 M (option D)

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Step 1: Data given

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Step 2:

Assume the mass of the solution is 1.00 gram

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Step 3:

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Volume of solution : 1.00 grams / 1.09 g/mL

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Number of moles = Mass / molar mass

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Number of moles = CH3COONa = 0.00207 moles

Step 5: Calculate molarity

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The molarity of this solution is 2.26 M (option D)

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