Answer:
A)
,
, ![E_{a} = 50KJ/mol](https://tex.z-dn.net/?f=E_%7Ba%7D%20%3D%2050KJ%2Fmol)
A = 1.5×
, A = 1.9×
, A=1.5×![10^{-7} s^{-1}](https://tex.z-dn.net/?f=10%5E%7B-7%7D%20s%5E%7B-1%7D)
B) 4.469
Explanation:
From Arrhenius equation
![K=Ae^{\frac{E_{a} }{RT} }](https://tex.z-dn.net/?f=K%3DAe%5E%7B%5Cfrac%7BE_%7Ba%7D%20%7D%7BRT%7D%20%7D)
where; K = Rate of constant
A = Pre exponetial factor
= Activation Energy
R = Universal constant
T = Temperature in Kelvin
Given parameters:
![E_{a} =165KJ/mol](https://tex.z-dn.net/?f=E_%7Ba%7D%20%3D165KJ%2Fmol)
![T_{1}=505K](https://tex.z-dn.net/?f=T_%7B1%7D%3D505K)
![T_{2}=525K](https://tex.z-dn.net/?f=T_%7B2%7D%3D525K)
![R=8.314JK^{-1}mol^{-1}](https://tex.z-dn.net/?f=R%3D8.314JK%5E%7B-1%7Dmol%5E%7B-1%7D)
taking logarithm on both sides of the equation we have;
![InK=InA-\frac{E_{a} }{RT}](https://tex.z-dn.net/?f=InK%3DInA-%5Cfrac%7BE_%7Ba%7D%20%7D%7BRT%7D)
since we have the rate of two different temperature the equation can be derived as:
![In(\frac{K_{2} }{K_{1} } )=\frac{E_{a} }{R}(\frac{1}{T_{1} } -\frac{1}{T_{2} } )](https://tex.z-dn.net/?f=In%28%5Cfrac%7BK_%7B2%7D%20%7D%7BK_%7B1%7D%20%7D%20%29%3D%5Cfrac%7BE_%7Ba%7D%20%7D%7BR%7D%28%5Cfrac%7B1%7D%7BT_%7B1%7D%20%7D%20-%5Cfrac%7B1%7D%7BT_%7B2%7D%20%7D%20%29)
![In(\frac{K_{2} }{K_{1} } )=\frac{165000J/mol}{8.314JK^{-1}mol^{-1} }.(\frac{1}{505} -\frac{1}{525} )](https://tex.z-dn.net/?f=In%28%5Cfrac%7BK_%7B2%7D%20%7D%7BK_%7B1%7D%20%7D%20%29%3D%5Cfrac%7B165000J%2Fmol%7D%7B8.314JK%5E%7B-1%7Dmol%5E%7B-1%7D%20%20%7D.%28%5Cfrac%7B1%7D%7B505%7D%20-%5Cfrac%7B1%7D%7B525%7D%20%29)
= 19846.04×7.544×
= 1.497
=
= 4.469
Answer:
I believe it's 2.70 grams
Explanation:
First, divide 1.33 x 10^22 by 6.022 x 10^23. 6.022 x 10^23 is Avogadro's constant of 1 mole of any atoms. After you divide, you get 2.208568582 x 10^-2 which you should round the the nearest hundredth which is 2.21 x 10^-2. Second, because of Sb or Antinomy atomic mass is 121.760, round it up to the whole number which is 122. Therefore, multiply 122 and 2.21 x 10^-2 which it'll equal to 2.6962 x 10. Finally, round it up and you'll get 2.70 grams. Hope that helps!
Answer:
the answer is god
Explanation:
because god created everything therefore hes the answer to everything
The volume of acetone, in milliliters, has a mass of 44.2 g is 55.96mL.
<h3>HOW TO CALCULATE VOLUME?</h3>
The volume of a substance can be calculated by dividing the mass by its density. That is;
Volume (mL) = mass (g) ÷ density (g/mL)
According to this question, acetone is a solvent with density of 0.7899g/mL and mass of 44.2g. The volume is calculated as follows:
Volume = 44.2g ÷ 0.7899g/mL
Volume = 55.96mL
Therefore, the volume of acetone, in milliliters, has a mass of 44.2g is 55.96mL.
Learn more about volume at: brainly.com/question/1578538
The answer is; Relative dating
This type of dating is not concerned with determining the absolute age of rock. It compares between rock layer and determines which is younger or older in comparison. Therefore relative dating is significant in arranging geologic events based on the stratigraphy of rock layers.