Answer:
The rate constant at 84.8°C is
Explanation:
Taking the Arrhenius equation we have:
Where is the rate constant at a temperature 2, is the rate constant at a temperature 1; is the temperature 1, is the temperature 2, R is the gas constant and is the activation energy.
Now, we need to solve the equation for , so we have:
Then we need to make sure that we are working with the same units, so:
And now we can replace the values into the equation:
To solve the ln we have to apply e in both sides of the equation, so we have:
Answer: -
9270 grams
Explanation: -
Number of molecules of C₆H₁₂O₆ = 3.25 x 10 ²⁶
According to Avogadro's law,
6.02 x 10 ²³ molecules of C₆H₁₂O₆ are present in 1 mole of C₆H₁₂O₆
3.25 x 10 ²⁶ molecules of C₆H₁₂O₆ are present in of C₆H₁₂O₆
= 54 mol of C₆H₁₂O₆
Molar mass of C₆H₁₂O₆ = 12 x 6 + 1 x 12 + 16 x 6 = 180g /mol
Mass of C₆H₁₂O₆ = 54 mol x 180g /mol
= 9270 g
Answer:
(d) burning a log.
(b) toasting a slice of bread;
Explanation:
Chemical change -
A chemical change refers to , the change in which a new compound is formed .
From the question ,
Its is not a chemical process , since no new compound is formed , these is only change in state as the liquid is turning to gaseous sate .
It is not a chemical process , as no new substance is formed .
- toasting a slice of bread
It is a chemical change , in which bread surface is deposited by a brown coat via the process of heating , even this process is a irreversible in nature .
It is a chemical change , as with the help of heating , the wood is turning to ashes .
Answer:
False
Explanation:
Message me for explanation.
Answer:
oh i love football. i know this. The guy with 200 kilograms because he is heavier o that means more weight going against the guy. Is this American football. cause i love American football
Explanation: