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spin [16.1K]
3 years ago
10

The time it takes to run a kilometer depends on the amount of exercise a person gets.

Chemistry
1 answer:
Debora [2.8K]3 years ago
3 0
<span>The amount of exercise that a person gets would be the independent variable, as it would impact the amount of time it would take to run the kilometer, with time being the dependent variable.</span>
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The amount of energy released when 0.06 kg of mercury condenses at the same temperature can be calculated using its latent heat of fusion which is the opposite of melting. Latent heat of fusion and melting can be used because they have the same magnitude, but opposite signs. Latent heat is the amount of energy required to change the state or phase of a substance. For latent heat, there is no temperature change. The equation is:

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According to data, the ΔH of mercury is approximately 11.6 kJ/kg.

E = 0.06kg (11.6 kJ/kg) = 0.696 kJ or 696 J

The answer is D. 697.08 J. Note that small differences could be due to rounding off or different data sources.
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