What volume of 0.250 M lead (II) nitrate, in milliliters, is required to react completely with 0.500 L of 0.500 M sodium chloride solution?

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

Which activity is an innate behavior