How many molecules are in 15 grams of oxygen gas?
a. 2.8 x 10 23 molecules of o2
b. 2.9 x1026molecules of o2
c. 2.5 x 10-24 o2
d. 9.03 x 1024 molecules of o2

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

Which of the following would not diffuse through the plasma membrane by means of simple diffusion? 1 oxygen 2 glucose 3 a steroid hormone 4 a lipid soluble vitamin

•what conclusions can you make about the relationship between the volume of a gas and its temperature? • what conclusions can you make about the relationship between the volume of a gas and its pressure? • what possible variables have you not accounted for? as you did the procedures, is it possible that the atmospheric pressure may have changed? if it did change over the course of your experiment, then how would your results have been affected?