Energy absorbed as heat and change in entropy
Find (a) the energy absorbed as heat and (b) the change in entropy of a 4.60 kg block of copper whose temperature is increased reversibly from 46.3°C to 95.5°C. The specific heat of copper is 386 J/kg·K.
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What weight of pure H2SO4 is present in each liter of concentrated sulfuric acid whose density is 1.86 g/ml and whichcontains 98% by weight H2SO4?
A uniform electric field of magnitude 339 N/C is directed along the +y-axis. A 5.00 µC charge moves from the origin to the point (x, y) = (-30 cm, -39 cm). (a) What is the change in the potential energy associated with this charge?
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Weigh out about 10 g of NaOH pellets and transfer them to 1 L bottle (preferably plastic as NaOH etches glass). Add about 600 mL of deionized water and mix until the NaOH dissolves. Add another 350 mL of deionized water and mix again.
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