Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 85.0 g of gold?

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Why is carbon ideal for making different compounds?