Charle’s Law.
It states that, for a given mass of an ideal gas at constant pressure, the volume is directly proportional to its absolute temperature, assuming in a closed system.
Barium Hydroxide is a strong base, so it completely dissociates into its ions when hydrated. The reaction would be
Ba(OH)₂ ⇒ Ba⁺² + 2 OH⁻
However, it would also follow the Law of Definite Proportions. So, the concentration of OH⁻ would be twice that of Ba(OH)₂, Therefore, the concentration of OH⁻ is 2(0.1 M) = 0.2 M OH⁻.
We use the concentration of OH⁻ to determine pOH. Then, we use the relationship between pOH and pH to determine the pH of the strong base. The equations are:
pOH = -log[OH⁻]
pH + pOH = 14
Therefore,
pOH = -log[0.2]
pOH = 0.6989
0.6989 + pH = 14
pH = 13.3
Half life period for the reaction where deduction of mass takes places is 8 days.
<h3>What is
half life?</h3>
Half life period of any reaction is that time where half concentration of reactant get converted into product.
Here we can calculate the half life through the below equation:
![$m = {m^'} \times {\left( {\frac{1}{2}} \right)^{\frac{t}{T}}}$](https://tex.z-dn.net/?f=%24m%20%3D%20%7Bm%5E%27%7D%20%5Ctimes%20%7B%5Cleft%28%20%7B%5Cfrac%7B1%7D%7B2%7D%7D%20%5Cright%29%5E%7B%5Cfrac%7Bt%7D%7BT%7D%7D%7D%24)
where, m' = initial mass of iodine = 80g
m = remaining mass = 2.5g
t = taken time = 40 days
T = half life
By putting this all value in above equation, we get
![.$\begin{array}{l}2.5 = 80 \times {\left( {\frac{1}{2}} \right)^{\frac{{40}}{T}}}\\\frac{{2.5}}{{80}} = {\left( {\frac{1}{2}} \right)^{\frac{{40}}{T}}}\\{\left( {\frac{1}{2}} \right)^5} = {\left( {\frac{1}{2}} \right)^{\frac{{40}}{T}}}\\5 = \frac{{40}}{T}\\T = 8\end{array}$](https://tex.z-dn.net/?f=.%24%5Cbegin%7Barray%7D%7Bl%7D2.5%20%3D%2080%20%5Ctimes%20%7B%5Cleft%28%20%7B%5Cfrac%7B1%7D%7B2%7D%7D%20%5Cright%29%5E%7B%5Cfrac%7B%7B40%7D%7D%7BT%7D%7D%7D%5C%5C%5Cfrac%7B%7B2.5%7D%7D%7B%7B80%7D%7D%20%3D%20%7B%5Cleft%28%20%7B%5Cfrac%7B1%7D%7B2%7D%7D%20%5Cright%29%5E%7B%5Cfrac%7B%7B40%7D%7D%7BT%7D%7D%7D%5C%5C%7B%5Cleft%28%20%7B%5Cfrac%7B1%7D%7B2%7D%7D%20%5Cright%29%5E5%7D%20%3D%20%7B%5Cleft%28%20%7B%5Cfrac%7B1%7D%7B2%7D%7D%20%5Cright%29%5E%7B%5Cfrac%7B%7B40%7D%7D%7BT%7D%7D%7D%5C%5C5%20%3D%20%5Cfrac%7B%7B40%7D%7D%7BT%7D%5C%5CT%20%3D%208%5Cend%7Barray%7D%24)
Hence, half life period of this reaction is 8 days.
To learn more about half life time, do visit the given link:
brainly.com/question/2320811
Answer:
Energy is neither created nor destroyed.
Explanation:
The law of conservation of energy states that energy can neither be created nor be destroyed. The total energy of an isolated system remains conserved. It never gets 0. It changes from one form of energy to other but never vanishes.
Hence, the correct option is (d) "Energy is neither created nor destroyed"
Answer:
66 grams of carbon dioxide
C3H8+5O2=3CO2+4H2O