Why does lighting always strike DOWN instead of UP?
The electrons in the cloud are attracted to the
electrons in the earth.
The lightning is magnetically attracted to the
ground.
The electrons in the cloud are electrically attracted
to the protons in the ground.

Drag each tile to the correct box arrange the layers not order from oldest to youngest

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 is a number added in front of a formula in order to balance the equation