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solniwko [45]
2 years ago
14

An atom with 39 protons and a mass number of 89 what is the number of neutrons

Chemistry
1 answer:
Liula [17]2 years ago
4 0

Answer:

50

Explanation:

the number of neutrons is gotten from the subtraction of the number of protons from the mass number

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2 years ago
For the reaction, Cl2 + 2KBr --> 2KCl + Br2, how many moles of potassium chloride, KCl, are produced from 102g of potassium b
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Solution :

From the balanced chemical equation, we can say that 1 moles of KBr will produce 1 moles of KCl .

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n = 102/119.002

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So, number of miles of KCl produced are also 0.86 mole.

Mass of KCl produced :

m = 0.86 \times Molar \  mass \ of \  KCl\\\\m = 0.86 \times 74.5 \ gram \\\\m = 64.07\  gram

Hence, this is the required solution.

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Answer:

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A solution...
steposvetlana [31]

Answer:

A

Explanation:

8 0
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