un volum de 168 m3(c. n.) de gaz metan de puritate 80% se supune arderii cu o cantitate stoechiometrica de aer. calculeaza volumul de azot (80% n2 in aer) ce se separa in urma procesului de ardere. ce cantitate de apa de var de cp=40% este necesara pentru a absorbi total co2 rezultat la ardere? se dau : ac=12 ; ah=1 ; aca=40 ; ao=16 ; an=14

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

Give the orbital configuration of the phosphorus (p) atom.

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?