Every electron in an atom is described by a unique set of four quantum numbers: n, ℓ, mℓ, and ms. the principal quantum number, n, identifies the shell in which the electron is found. the angular momentum quantum number, ℓ, indicates the kind of subshell. the magnetic quantum number, mℓ, distinguishes the orbitals within a subshell. the spin quantum number, ms, specifies the electron spin. identify which sets of quantum numbers are valid for an electron. each set is ordered (n, l, ml , ms).a. 2,-2,2,-1/2b. 3,0,0,1/2c. 3,2,-1,-1/2c. 1,3,0,1/2d. 4,2,1,1/2e. 3,2,1,1f. 2,3,1,1/2g. 2,1,0,1/2h. 4,3,5,-1/2i. 0,2,0,1/2j. 1,2,0,-1/2k. 3,1,-1,1/2

During which time interval does the object travel approximately 10 meters

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

Who examines and coordinates the cleanup of polluted sites?