How is thermal energy transferred between two objects that are at different temperatures? Group of answer choices

Heat flows from the object that has more thermal energy to the object with less thermal energy.

The object at a lower temperature pulls heat from the warmer object.

Heat flows from the warmer object to the cooler object until they reach the same temperature.

Heat flows back and forth between the two objects untl they reach the same temperature.

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

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.)

Adepositional also feature that forms where a stream enters a lake or an ocean is a