The balance chemical reaction describing the reaction between Mg2+ and Cl- is shown below,
Mg2+ + 2Cl- ----> MgCl2
This is a reaction where there is a transfer of electrons. Since the valence electron of Mg2+ is 2 and that of Cl- is only 1. There is a need for 2 Cl- to react with 1 Mg2+ in order to balance the equation.
Thus, the anwer is MgCl2.
Carbon has 6 protons, that's why its atomic number is 6
Answer:
It will take 0.0205s for 79% of cyclobutane to decompose
Explanation:
Step 1: Data given
Temperature = 1000 °C
Reaction is first order
rate constant = 76*1/s
The initial cyclobutane concentration is 1.63M
How long (in seconds) will it take for 79% of the cyclobutane to decompose?
When 79% decomposes, there will remain 21 %
ln ([A]0 / [A]t) * = k*t
There are four variables in the rate law, so if we know three of them, we can determine the fourth. In this case we know [A]0, [A], and k, and need to find t.
⇒ with [A]0 = the original amount = 100 % =1
⇒ with [A]t = the amount after it's decomposed = 21 % =0.21
⇒ k = the rate constant = 76/s
⇒ t= the time needed = ?
ln (100/21) = 76t
t = 0.0205 s
It will take 0.0205s for 79% of cyclobutane to decompose
The question is incomplete, the complete question is;
Ideally speaking, bonds tend to form between two particles such that they are separated by a distance where _______ net force is exerted on them, and their overall energy is _________.
A.zero, maximized
B. a negative, minimized
C. a positive, minimized
D. a positive, maximized
E. zero, minimized
F. a negative, maximized
Answer:
E. zero, minimized
Explanation:
Chemical bonding occurs when there is a dynamic equilibrium between the attractive and repulsive forces. This means that the magnitudes of the attractive and repulsive forces are equal and the net force is zero.
Also, at the point where bonding occurs, the energy of the system is minimum. The point on the potential energy curve that represents the bonding energy is the lowest point on the curve.
Answer:
B
Explanation:
V1 = 4.6L
T1 = 23°C = (23 + 273.15)K = 296.15
T2 = 115°F = (115 + 225.928)K = 340.928K
V2 = ?
To solve this question, we need to use Charles law which states that the volume of a fixed mass of mass is directly proportional to its temperature provided that the pressure remains constant.
Mathematically,
V = kT, k = V / T
V1 / T1 = V2 / T2 = V3 / T3 =.......=Vn / Tn
V1 / T1 = V2 / T2
Solve for V2
V2 = (V1 × T2) / T1
V2 = (4.6 × 340.928) / 296.15
V2 = 5.2L
The final of the gas is approximately 5.0L