A 175 g lump of molten lead at its melting point (327° C) is placed into 55.0 g of water at 20.0°C. The specific heat of
lead is 130J/kg°C and the Hf of lead is 20,400 J/kg. When
the lead has become solid but is still at the melting point, what
is the temperature of the water?

The substances that are necessary for producing of certain hormones and that store and transport vitamins

You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.

Diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano. the piano moves upward, then stops, and then it starts to fall to the ground. which list best describes the forces on the piano in the proper order? a.positive force, balanced force, negative force b.negative force, balanced force, positive force c.positive force, unbalanced force, negative force d. negative force, unbalanced force, positive force