Answer:
2 NO (g) → N2 (g) + O2 (g)
2 NOCl (g) → 2 NO (g) + Cl2 (g)
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2NOCl (g) ⟶ N2 (g) + O2 (g) + Cl2 (g)
ΔH = [90.3 kJ x 2 x -1] + [-38.6 kJ x -1 x 2] = -103.4 kJ
The ΔH for the reaction is -103.4 kJ
Scientists would usually use DNA to find human genome <span />
"<span>Changes of state are physical changes. They occur when matter absorbs or loses energy. Processes in which matter changes between liquid and solid states are freezing and </span>melting<span>. Processes in which matter changes between liquid and gaseous states are vaporization, evaporation, and condensation."</span>
<h2>The difference between matter, mass, and volume is that:</h2>
<u>Matter</u> is a physical substance which can be touched, seen, smelled, and sometimes heard. It comes in different states: liquid, solid, gas, and plasma.
<u>Mass</u> is the measure of how much <u>matter</u> is in an object.
<u>Volume</u> is the measure of how much space is inside of a 3D object.
