What are homogeneous mixtures of metals commonly called? a) alloys b) colloids c) compounds d) suspensions

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.