Why does a human body need proteins?
A. To place amino acids acids in a specific order?
B. To guard against harmful mutations?
C. To send messages to the cell’ cell’s s cytoplasm?
D. To perform important bodily functions?

Noble gases are the most reactive elements on the periodic table. a. true b. false

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

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 .