If 230 W of power is produced in 10 seconds, how much work is done?

A175 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 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Which is the most accurate name for the ionic compound cas?