Which is the next logical step in balancing the given equation?
n2 + o2 → no2
place the coefficient 2 in front of oxygen and nitrogen dioxide.
place the coefficient 3 in front of oxygen and nitrogen dioxide.
the equation is already balanced.
change the subscript of the nitrogen molecule to 1.

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

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 happening when the water inside a kettle heats up and begins to boil