Which of these is a sign of salinization in crop plants? A. Yellowing of leaves
B. Wilting of seedlings
C. Dead patches on leaves
D. Enlarged seedlings

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 .

One similarity and one difference between an element and a mixture of elements

Is of of 3- ? a. 1--3- b. 1--2- c. 1--3- d. of