The measure of the amount of dissolved salt in a liquid sample is called
the water cycle.
evaporation.
salinity.
a thermal exchange.

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.)

Air can be considered a mixture. which statement does not explain why?

How many moles are in 123.0 grams of kclo4?