HURRY

A compound contains 46.7% nitrogen and 53.3% oxygen by mass. What is the empirical formula of the compound?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption