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Problem- A certain metal melts at 264 C, and its heat of fusion is 29 J/g. Its average specific heat is 0.21 J/gC as a liquid and 0.27 J/gC as a solid. How much energy is required to heat 941 kg of the metal from 26 C to 339C?
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The destruction of the ozone layer by chlorofluorocarbons (CFCs) can be described by the following reactions: ClO(g) + O3(g) ----> Cl(g) + 2 O2(g) (ΔHrxn = -29.90 kJ)
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7.3 { mol} of helium are in a 18 { L} cylinder. The pressure gauge on the cylinder reads 67 {psi}. What are (a) the temperature of the gas in degrees Celsius and (b) the average kinetic energy of a helium atom in Joules
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Marshmallow burnt is 0.70 g, mass of the water 39.9, and delta change is 12C 2. Peanut burnt is 0.5 g, mass of the water is 42.6 g, and the delta change is 12C. 3. Popcorn is 0 g burnt, mass of the water is 44.83 g, and the delta change is 1 C.
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