Answer:
+15.8°
Explanation:
The formula for the observed rotation (α) of an optically active sample is
α = [α]<em>lc
</em>
where
<em>l</em> = the cell path length in decimetres
<em>c</em> = the concentration in units of g/100 mL
[α] = the specific rotation in degrees
1. Convert the concentration to units of g/100 mL

2. Calculate the observed rotation

Neither it's a single replacement equation
Answer:
Explanation:
I dont know please tell me
To Find :
How many moles are in
atoms of iron.
Given :
We know, 1 mole of any element or compound contains exactly
( Avogadro's Number ) atoms/compound .
Now, 
So, number of moles in given number of atoms are :

Hence, this is the required solution.