5. A total of 5,000 joules of heat are absorbed as 30 g of lead is heated from 20.0°C to 80.0°C. From this data, what is the specific heat of lead in J/gºC?

mention the spill to the teacher clean the area and throw the broken pieces away

explanation:

there is none because earth is stationary and flat.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.