Which of the following are true about electric motors? A. An armature spins to create kinetic energy.

B. All of these are correct.

C. A horseshoe magnet drives the spin of the armature.

D. The direction of the current is changing direction over and over.

How will the emission of an alpha particle affect the atomic number of an atom

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 .

What mass of glucose is produced when 54g of water react with carbon dioxide