Find pairs of objects that shows different example of the same property. For example, to show the property of " Clarity" you can show something that is transparent and something that is translucent. I'M BEGGING YOU PLEASE DON'T SEND A LINK I really need with this so please don't

The clouds are grey and ground is wet. a quantitative b qualitative

What is avogadro’s number, and why is it useful

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 .