The ΔHfus for sodium is 2.60 kJ/mol. The ΔHvap of sodium is 97.42 kJ/mol. The specific heat for solid sodium is 1.23 J/g°C. The melting point of sodium is 97.81°C. The boiling point for sodium is 882.9°C. How much energy is required to raise the temperature of 50.0 grams of sodium from 0.0°C to its melting point?

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?

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Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.