Answer: short answer short 0.65 / 5.37
15% NaOH by mass is 15g of NaOH in (100-15)g of solution.
No. Of moles of NaOH in solution = 0.65
No of moles of Water in solution = 4.72
Mole Fraction =
(
(Moles of Solvent)
(Moles Of Solute)+(Moles of Solvent)
)
OR
(
(Moles of Solvent)
Total Number Of Moles
)
= 0.65 / 5.37
= 0.121
Explanation:
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Answer:
C
Explanation:
The reason why C is true is because this species of plant requires certain things to survive, and without said requirements they will die. Hence, the animal that is unable to compete will die and be eliminated from the ecosystem. Hope that helps!
Explanation:
The given data is as follows.
Q = 620 C, t = 0.510 hour
First, we will convert hours into seconds. Since, there are 3600 seconds present in 1 hour. Hence, number of seconds present in 0.510 hour are as follows.

= 1836 sec
Therefore, we will calculate the average current as follows.
I = 
= 
= 0.337 C/sec
It is known that,
1 C/sec = 1000 mA
So, 
= 337 mA
Thus, we can conclude that the average current in milliamperes is 337 mA.
The manufacture of epoxyethane from ethene.
The halogenation of benzene.
The reaction with chlorine. The reaction with bromine.
The Friedel-Crafts alkylation of benzene.
The Friedel-Crafts acylation of benzene.