Sodium - reacts vigorously with water. magnesium - shiny, silvery, soft metal. chlorine - forms an acid when combined with hydrogen. xenon - colorless and odorless gas. look at the periodic table and the characteristics of the elements given above. select the group of elements that include only those that are either colorless, odorless gases or shiny, silvery, soft metals. a) radon, neon, calcium b) neon, bromine, barium c) beryllium, iodine, krypton d) lithium, potassium, fluorine

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2

A0.10 m aqueous solution of sodium sulfate is a better conductor of electricity than a 0.10 m aqueous solution of sodium chloride. which of the following best explains this observation? (a) sodium sulfate is more soluble in water than sodium chloride. (b) sodium sulfate has a higher molar mass than sodium chloride. (c) to prepare a given volume of 0.10 m solution, the mass of sodium sulfate needed is more than twice the mass of sodium chloride needed. (d) more moles of ions are present in a given volume of 0.10 m sodium sulfate than in the same volume of 0.10 m sodium chloride. (e) the degree of dissociation of sodium sulfate in solution is significantly greater than that of sodium chloride.