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?

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.