14. A sample of ethanol has a volume of 7.5 mL and a mass of 5.85 g. A sample of benzene also has a volume of 7.5 mL, but has a mass of 6.60 g. Which liquid is denser?

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

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explanation:

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a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.