Someone help me with this question please

How to convert a density of 0.791g/cm3 to lb/ft3

In a copper wire, a temperature increase is the result of which of the following

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers