The answer is decomposition and synthesis. A synthesis response is a reaction in which two or more constituents mix to make a new compound. When two elements mix in a synthesis reaction, the only outcome that can be completed is a binary compound while a decomposition reply is when a compound splits into its compounds or elements.
The general formula is C(carbon)nH(hydrogen)2n.......where n denotes the number of carbon atoms in each molecule.
The finagling in the hole
The first order rate law has the form: -d[A]/dt = k[A] where, A refers to cyclopropane. We integrate this expression in order to arrive at an equation that expresses concentration as a function of time. After integration, the first order rate equation becomes:
ln [A] = -kt + ln [A]_o, where,
k is the rate constant
t is the time of the reaction
[A] is the concentration of the species at the given time
[A]_o is the initial concentration of the species
For this problem, we simply substitute the known values to the equation as in:
ln[A] = -(6.7 x 10⁻⁴ s⁻¹)(644 s) + ln (1.33 M)
We then determine that the final concentration of cyclopropane after 644 s is 0.86 M.
Molar mass HBr = 80.91 g/mol
number of moles:
mass of solute / molar mass
52 / 80.91 => 0.642 mols
Volume = 0.25 L
M = n / V
M = 0.642 / 0.25
M = 2.568 mol/L
hope this helps!
