The luminosity of a star as viewed from earth has an inverse relationship to the Blank of the star A. age B. color C. distance D. mass

Gravity bc it’s gravity

The answer is a i think

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.