A scientist placed an egg in vinegar to dissolve the shell. After the shell dissolved, only the semipermeable membrane of the egg remained. Then she placed the egg in water, and the egg
increased in size as water molecules diffused into the egg. Next, she placed the egg in corn syrup,
and the egg decreased in size as the water molecules diffused out of the egg. Why were water
molecules able to enter the egg but NOT sugar molecules?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?