How much copper is in 4.64 grams of copper

0.09 moles of sodium sulfate in 12 ml of solution

What causes the appearance of lines in a emission spectrum

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost