Xenon reacts with fluorine to produce xenon tetrafluoride. What is the mass in grams of XeF4 produced when 3.20 L Xe reacts with excess fluorine?

a 29.6 g
b 31.5 g
c 35.1 g
d 38.0 g

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

Can someone me with questions 15 to 17 plz.

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.