Chemistry, 26.03.2020 15:55 kennedy6010

These were formed hundreds of millions of years ago from remains of living organisms and before the time of the dinosaur.

a. fossil fuels
b. minerals

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 20:30, demarcuswiseman

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

Answers: 2

continue

Chemistry, 22.06.2019 21:40, k3rbycalilung

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.

Answers: 2

continue

Chemistry, 22.06.2019 22:00, gedntrxAa

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these

Answers: 1

continue

Chemistry, 23.06.2019 01:30, jarteria0

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.

Answers: 2

continue

You know the right answer?

These were formed hundreds of millions of years ago from remains of living organisms and before the...