Chemistry, 23.07.2019 09:30 kaylee2828

For the balloon to float, what is the minimum temperature tmin of the hot air inside it?

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Chemistry, 22.06.2019 13:30, citlalli30

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Chemistry, 22.06.2019 14:30, Dreynolds1667

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)