Estimate the ratio of the concentration of electrons in the conduction band of carbon (an insulator) and silicon (a semiconductor) at room temperature (293 K). The energy gaps are 5.5 eV for carbon and 1.1 eV for silicon

What is the chemical formula of the following compound

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-