Combustion usually occurs when a hydrocarbon reacts with oxygen to produce carbon dioxide and water. Combustion reactions are almost always exothermic CO(g) + ½O2(g) → CO2(g) + 67.6 kcal
base from the reaction, the stoichiometric ratio is 1 mole CO produce 67.6 kcal so the anwer is - 67.6 kcal because is it exothermic
For p<span>rincipal quantum number n=4:
1) a</span><span>zimuthal quantum number (l) can be l = 0...n-1:
l = 0, 1, 2, 3.
</span><span>The azimuthal quantum number determines its orbital angular
momentum and describes the shape of the orbital. </span><span>
2) m</span>agnetic quantum number (ml) can be ml = -l...+l.
ml = -3, -2, -1, 0, +1, +2, +3.
<span>Magnetic quantum
number specify orientation of electrons in magnetic field and number of electron states (orbitals) in subshells.
3) t</span>he spin quantum
number (ms), is the spin of the electron.
ms = +1/2, -1/2.
The dimensions of field are . The area can be calculated as follows:
Converting ,
1 km =1000 m
Thus,
or,
Since, cost of new artificial turf is , thus, cost for will be:
Therefore, cost of artificial turf for field will be .
The earth probably would still be Pangaea form. All the continents would still be combined, and the earth would look very different.