How many particles are contained in 2.75 moles of aluminum fluoride?
1 answer:
number of particles are present in 2.75 moles of Aluminium fluoride
Explanation:
- The number of particles in 1 mole of substance is
which is called the Avogadro’s number.
- It is is a number which represents a atomic scale substance to a understandable human scale form.
- Here, 1 mole of aluminium fluoride contains
So, the number of particles in 2.75 moles of aluminium fluoride is
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7.86 is the pOH of water at this temperature of 100 degrees celsius.
Option E is the right answer.
Explanation:
Data given:
Kw = 51.3 x
pOH = ?
we know that pure water is neutral and will have pH pf 7.
The equation for relation between Kw and H+ and OH- ion is given by:
Kw = [H+] [OH-}
here the concentration of H+ ion and OH- ion is equal
so, [H+]= [OH-]
Putting the values in the equation of Kw
pKw = -log[Kw]
pKw = -log [51.3 x ]
pKw = 12.28
since H+ ion OH ion concentration is equal the pH of water is half i.e. 6.14
Now, pOH is calculated by using the equation:
14 = pOH + pH
14- 6.14 = pOH
pOH = 7.86
Answer:
The answer is
<h2>2 cm/year</h2>Explanation:
To find the rate in cm/year we must first convert 200 m into cm
1 m = 100 cm
if 1 m = 100 cm
Then 200 m = 200 × 100 = 20 ,000 cm
So the rate is
<h2><u>Reduce the fraction with 10,000</u>
We have the final answer as
<h3>2 cm/year</h3>Hope this helps you