Write out the full electron configuration for an atom that has four valence electrons in the second energy level. Use ^ to denote a superscripted value.

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate