A sample of copper is heated to 100°C and placed into a calorimeter containing 50 g of water ,at 25°C .After a few minutes ,the final temperature of the system reaches40°C. How much heat was released by the copper sample?

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

i need mutiple choices

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

explanation: