<span>1.15x10^24 molecules of hypothetical substance b
Making the assumption that each molecule in hypothetical substance a reacts to produce a single molecule of hypothetical substance b, then the number of molecules of substance b will be the number of moles of substance a multiplied by avogadro's number. So
Moles hypothetical substance a = 29.9 g / 15.7 g/mol = 1.904458599 moles
This means that we should also have 1.904458599 moles of hypothetical substance b. And to get the number of atoms, multiply by 6.0221409x10^23, so:
1.904458599 * 6.0221409x10^23 = 1.146892x10^24 molecules.
Rounding to 3 significant figures gives 1.15x10^24</span>
Explanation:
Reaction equation for this reaction is as follows.
It is given that 
= 0.0118.
According to the ICE table,
Initial: 0.86 0.86 0 0
Change: -x -x +x +x
Equilibrium: 0.86 - x 0.86 - x x x
Hence, value of will be calculated as follows.
0.0118 = 
x = 0.084 atm
Thus, we can conclude that 
is 0.084 atm.
A measure of how much work we can get from each unit of energy. It's also important because we don't want to kill plants.
<span>The reactants have a slightly greater mass. In a nuclear reaction, a small amount of mass
is converted to energy according to the equation E = mc2. The difference in mass is referred to as the
mass defect.</span>
<span>No. A chemical reaction does not destroy matter but it can convert matter into another form or into a substance with a different molecular structure. Matter can even be converted into energy in a nuclear reaction.</span>
