Electronic and electrical devices differ in the way they use voltage information conducting wire electric current

How many grams are in 68.2 molecules of br2?

What causes the appearance of lines in a emission spectrum

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.