Calculate the potential energy of a 4kg cat crouched 3 meters off the ground

The sample with the lowest specific heat capacity will have the greatest temperature increase. in this case, it would be platinum.

Answer (d) the universe had cooled enough for atoms to combine, protons and neutrons were too far apart to form nuclei;

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.