Students in chemistry course were asked the following question on a unit exam: "Draw a diagram representing an element using circles as atoms."
a. The following diagrams represent the two types of answers given by students. Which is the drawing best representation of an element? Explain.
b. imagines that the atom in drawing B had been removed from one of the substances used earlier.
i. List the codes of the substances that "drawing B" could have come from through physical separations?

I need more help with part b. plz

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)

What is the relationship between wind and ocean waves? question 17 options: wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves. wind moving at higher speeds will transfer energy over a larger part of the ocean water, resulting in waves with a shorter wavelength. winds moving at higher speeds with cause water to move forward at faster rates, causing larger ocean waves. winds moving at higher speeds will affect deeper water, resulting in waves that move at a faster rate. how do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.