The cycle of copper reactions starts with solid copper metal and ends with solid copper metal. Suppose you start with 0.492 g of Cu. After performing all the reactions, you have 0.459 g of Cu. What percentage of the copper did you recover?

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

how important do you think an instrument is to the musician who plays it?