An aluminum block with a temperature of 300oc is placed into 200 milliliters of water with a temperature of 20oc. which statement best describes what will be observed in this experiment?
group of answer choices

heat will flow from the metal to the water until both are at the temperature of the container.

heat will flow from the metal to the water until both are 300oc.

heat will flow from the metal to the water until both are 20oc.

heat will flow from the metal to the water until both are at a temperature somewhere between 20oc and 300oc.

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.)

All forces cause motion? true or false

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver