Please Help me with my science hw TY SO MUCH!!!?

1. Which statement is incorrect when considering gases?





A. Gas molecules are in constant, random motion at room temperature.


B. The reason that a gas can be stored in a container is that the molecules no longer move when confined to a container.


C. A reason why molecules of a gas fill a container is that there is no attraction between the molecules of the gas.


D. The reason that gases are compressible is because the molecules of a gas are very far apart compared to the size of the molecules.





2. According to Boyle's Law, a decrease in the pressure of a gas occurs when the..





A. volume is increased.


B. volume is decreased.


C. temperature is increased.


D. number of moles of gas is increased.





3. Three gases are used to fill a container. The mixture contains 0.250 atm oxygen, 385 mm Hg nitrogen, and neon. If the total pressure of the mixture is 825 torr, what is the partial pressure in mm Hg of neon?





A. 250. mm Hg


B. 190. mm Hg


C. 575 mm Hg


D. 440 mm Hg

Please Help me with my science hw TY SO MUCH!!!?
1 - B.


After all, why would molecules stop moving just because they're confined?





2 - A


Boyle's law states that pressure and volume are inversely correlated, meaning that as one goes up, the other goes down, and vice-versa.





3 - Just convert all of the partial pressures to mm Hg, and then do the math. This is simple subtraction.