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Arlecino [84]
3 years ago
14

How many electrons are in O2-?

Chemistry
1 answer:
egoroff_w [7]3 years ago
5 0

Answer:

There will be 16 electrons in O2-

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The Moon rises at noon and sets at midnight. What is the phase of the Moon?
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a 22.44g sample of iron absorbs 180.8 J of heat, upon which the temperature of the sample increases from 21.1C to 39.0/ what is
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Answer:

The specific heat of iron is 0.45 J/g.°C

Explanation:

The amount of heat absorbed by the metal is given by:

heat = m x Sh x ΔT

From the data, we have:

heat = 180.8 J

mass = m = 22.44 g

ΔT = Final temperature - Initial temperature = 39.0°C - 21.1 °C = 17.9°C

Thus, we calculate the specific heat of iron (Sh) as follows:

Sh = heat/(m x ΔT)  = (180.8 J)/(22.44 g x 17.9°C) = 0.45 J/g.°C

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QUESTION 2
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