At what temperature does a chemical turn into a gas

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

0.2348 grams of pbcl2 used to form 44.0 ml of solution.