An air mattress is filled with 0.55 moles of air. The air inside the mattress has a temperature pf 295 K and gauge pressure of 3.5 kilopascals

What does the symbol (–hfus) indicate in a phase change?

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb