Natural vs. Synthetic And I have to answers some questions which she didn't give no resources
Questions:
2) What is the importance to humans? (Why do humans use/make it?)

3) What natural resources are used to make the synthetic material?

4) What are the atomic structures of the reactants and the synthetic product?

5) How is the synthetic material made? (What chemical process(es) are used to create the product?)

6) What are the negative and positive impacts/effects of making and using the synthetic material, compared to making and/or using a more natural material with a similar function?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.