Which statement best describes the difference between endothermic and exothermic reactions?
they are opposites because endothermic reactions require energy and exothermic reactions release energy.
they are opposites because endothermic reactions release energy and exothermic reactions require energy.
they the same because they are both ways of forming precipitates.
they the same because they are both ways of forming gasses.
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The vapour pressure of benzene is 53.3 kpa at 60.6 Β°c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.
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Which statement best describes the difference between endothermic and exothermic reactions?
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