You have a vial containing 20.0g of oxygen gas. What is the percent composition of oxygen? Cannot be determined without more information

83%

100%

90.8% oxygen

What does that mean you dum bum

Is there an image with it

The main types of electromagnetic radiation. radio  waves have  the lowest frequencies  and  longest  wavelengths, while gamma  waves have highest frequencies  and shortest wavelengths. the wavelengths vary across the electromagnetic spectrum from about 10–15 m to more than 104 m.hope it !