Complete the following analogy: Atmosphere: air for breathingprotection from Sun's particles

A: Conditions
B: Temperature
C: Magnetic field
D: Water

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Consider this initial-rate data at a certain temperature for the reaction described by

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.