If a 425 gram sample of Uranium-235 had a half-life of 8 days, how much of the sample would remain after 16 days? type your answer
grams

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

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?