Asolution
a)has a heterogeneous composition and is able to be separated by physical means
b)has a uniform composition and is only able to be separated by chemical means
c)has a uniform composition and is able to be separated by physical means
d)has a heterogeneous composition and is able to be separated by chemical means

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

Rays from the sun are not considered matter true or false