During the isothermal heat rejection process of a carnot cycle, the working fluid experiences an entropy change of –0.7 btu/r. if the temperature of the heat sink is 95°f, determine (a) the amount of heat transfer, (b) the entropy change of the sink, and (c) the total entropy change for this process

  concave means having an outline or surface that curves inward like the interior of a circle or sphere. so the mirror curves inward.

The chemical reactions lab we did is typically called a "copper plating lab,  because the acid solution cleaned the pennies and made the copper look shinier;   the acid solution cleaned the paperclips and made them look like pennies;   &   the copper from the pennies was removed, and then added to the paperclips.