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Paraphin [41]
3 years ago
5

When an atom gains an electron to become an ion what happens to its size?

Chemistry
1 answer:
irina [24]3 years ago
5 0
It stays roughly the same size. Electrons have a barely imperceptible mass so the overall mass of the atom is changed very little.
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Which scientist was the first to devise the rules of chemical reactions that are explained by modern atomic theory?
valina [46]

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Explanation:

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Which of the following is a statement of Hess's law?
attashe74 [19]

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C

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2 years ago
How much heat is required to raise the temperature of a 6.21 g sample of iron from 25.0 oC to 79.8 oC?
telo118 [61]

Answer:

151.1J

Explanation:

Given parameters:

Mass of iron  = 6.21g

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Amount of heat = ?

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The amount of heat require to cause this temperature can be determined using the expression below;

    H  = m c (T₂ - T₁)

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     H   = 151.1J

5 0
3 years ago
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