A 4.0 gram piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 6,000 J. If the specific heat of copper is 0.40 J/gºC, what is the change of the copper's temperature? 3,750 K 37.5 K 3,750 °C 37.5 °C​

The rock in a lead ore deposit contains 89 % pbs by mass. how many kilograms of the rock must be processed to obtain 1.5 kg of pb?

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )