How did modern scientists experiment with Van Gogh's paints to determine their chemical reactions?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Asolid that forms and separates from a liquid mixture is called

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign