While watching tv in your room one nigh, you decide to have some Oreos and a glass of milk. there were only 3 Oreos and science you pored a huge glass of milk you couldn't finish it all. Instead of taking it to the kitchen, you put the glass of milk under your bed. Your mom discovered it three months later when she was cleaning your room. The cup no longer had a white liquid...it now contained a semi-solid layer of cheese like stuff floating on top of a clear liquid. Did a chemical reaction take place, yes or no? what evidence or lack of evidence do you have to support your answer?

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .