Asaturated solution of silver nitrate is prepared in 100g of water at 20c. the solution is then heated to 50c. how much more silver nitrate must now be added to obtain a saturated solution?

233 g.

Explanation:

The solubility of silver nitrate at 20.0°C is 222 g per 100 g of water.

The solubility of silver nitrate at 50.0°C is 455 g per 100 g of water.

∴ We need to add (455 g - 222 g = 233 g) of AgNO₃ to obtain a saturated solution at 50.0°C.

h let me think

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.