Find the thermal-equilibrium electron and hole concentrations in silicon with doping concentrations of Na 7 1015 cm3 and Na 3 1015 cm3 for (a) T 250 K and (b) T 400 K.

What is the maximum number of electrons that an atomic orbital can contain?

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.

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume