SCRIE FORMULA ŞI DENUMEŞTE SUBSTANŢA

10. 1 atom azot şi 3 atomi de
hidrogen
11. 2 atomi de hidrogen, 1 atom de cabon şi 3 atomi de
oxigen

Totul este greu înainte de

a deveni ușor

12. 1 atom de carbon şi 2 atomi de oxigen

13. 1 atom de calciu şi 1 grupare
carbonat
14. Pb (II) și 1 grupare carbonat
15. Co (II) și o grupare fosfat
16. Arsen și un radical sulfură

Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

The reaction below shows a system in equilibrium. how would a decrease in temperature affect this reaction? a. the rate of formation of the gases would increase. b. the equilibrium of the reaction would shift to the left. c. the equilibrium would shift to cause the gases to sublime into solids. d. the chemicals on the left would quickly form the chemical on the right.