Cl2 + ki > kcl + choose the correct coefficients for the above equation. a. 1,2,2,1 b. 2,1,2,1 c. 1,2,1,1 d. 1,1,2,2

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?