1. The volume of a gas is 120 L at 0.500 atm and 15.0C. What volume will it occupy at 0.250 atm and 10.0C? (please explain with steps). :)

2. The volume of a gas is 400. mL at 30.0C. What volume will it occupy at 50.0C if the pressure remains constant? (please explain with steps). ;)

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

What is the lowest number energy level where a d sublevel is found