Answer:
This observation can be explained under the following reasons:
- High sodium content
- Lowered heat temperature
- Organic burn
Explanation:
High sodium content from the potato fluid causes the flame to turn yellow, as indicative of the presence of sodium (flame test).
The colour change could also be attributed to the drastic lowering of the burner heat. Finally, pure organics like wood and fats burn red, a would be the case with fluids from the boiled potatoes.
I hope this explanation was helpful.
Answer:
Explanation:
8.97 x 10⁵ 
= 8.97 x 10² x 10⁵ 
= 8.97 x 10² x 10⁵cm /(10³ms)²
= 8.97 x10 x 10⁶cm / 10⁶ ms²
= .897 x 10² 
The correct answer is - B) 650.
The Red Sea is a sea that grows in size because it is widening all the time. The rate of the widening is 1.25 centimeters per year, so it is not something that can be easily seen during a normal human lifespan, but over a longer period of time it will have a much different shape, size, and influence in the region. It is located between the African and the Arabian tectonic plates as an elongated thin sea with a northwest-southeast direction.
The widening of the Red Sea is due to the movement of the tectonic plates. Africa is moving towards northwest, and that makes it slowly distance itself from the Arabian plate, thus opening more space for the Red Sea.
In order for the Red Sea to widen another 812.5 centimeters, will be required 650 years, and we can come to the result by simple dividing the required number of the width with the annual widening.
812.5 / 1.25 = 650.
Answer:
Explanation:
Using the Arrhenius equation for the give problem:
Taking the natural log (ln) of both sides, we have:
In the given problem, we have two rate constants at two different temperatures. Thus:
(1)
(2)
Subtracting equation (1) from equation (2), we have:
(3)
; 
; 
Therefore, equation (3) becomes:
![ln 0.0815 - ln 0.0796 = E_{a}[\frac{1}{8.314*1010} - \frac{1}{8.314*1220}]](https://tex.z-dn.net/?f=ln%200.0815%20-%20ln%200.0796%20%3D%20E_%7Ba%7D%5B%5Cfrac%7B1%7D%7B8.314%2A1010%7D%20-%20%5Cfrac%7B1%7D%7B8.314%2A1220%7D%5D)
-2.507 - (2.531) = Ea*[0.00012 - 0.000099]
Ea = 0.024/0.000021 = 1142.86 J/mol
The activation energy of the reaction in scientific notation is
