Graph below compares the volume occupied by 100 g of liquid water and 100 g of water vapor. a bar graph is shown with the title, volume occupied. the y axis title is, volume. the x axis title is, substance. there are two markings on the x axis. one is marked x and the other is marked y. the bar above x is far higher than the bar above y. which statement best describes the two substances? particles are farther apart in liquids so substance y is liquid water. particles are closer together in liquids so substance x is liquid water. particles are closer together in gases so substance y is water vapor. particles are farther apart in gases so substance x is water vapor.

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?