Each element has its own emission bright line spectrum pattern. true or false?

The answer to this question is true. The reason is because each element has its own emission bright line spectrum pattern is that every element has its own energy level and light passes through photons and electrons differently

Idid the calculation and i get 875,000,000 which can be written as 8.75 x 10^6?

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck