Rigel and the sun have similar characteristics, but they also differ in some ways. Rigel and the sun are spheres of gas that use nuclear fusion to produce energy. Rigel is the sun. Rigel has the sun. Rigel has a surface temperature of about

Which element is the least metallic between cadmium, silver, zinc, or iron?

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 .

To calculate the molarity of a solution, you need to know the moles of solute and the