Explanation:
It is known that number of moles of a substance equal to mass divided by its molar mass.
Mathematically, No. of moles = 
It is given that no. of oles present are 27.2 mol and molar mass of N is 14 g/mol.
Therefore, calculate mass of N as follows.
No. of moles =
27.2 mol = 
mass = 380.8 g
Thus, we can conclude that mass of N is 380.8 g.
Answer:
The nitro group is an ambident group and is capable of getting attached to carbon chain through nitrogen. as well as through oxygen (-O - N = O) atom. The compound in which the -NO2 group is linked to the alkyl or aryl group through oxygen atom are called nitrites
The formula is given by Molarity of mgso4 required for the titration * Volume of mgso4 for the titration = Molarity of mgso4 used to make the solution * Volume of mgso4 used to make the solution.
So we have 0.5 * Volume of mgso4 = 100 * 0.2
So Volume of mgso4 = (100 * 0.2)/ 0.5
Volume = 20/0.5 = 40ml = 40 * 10^(-3)
Answer:
Only thing that should hold constant is the Density of the water
Explanation:
Since you are removing some of the water, the Mass and Volume will decrease.
This is a difficult task because zinc is much more active than copper and could hardly be passivated. ... The sur- face immediately turns white (the color of copper(I) iodide) and the yellow-brown color of iodine quickly fades. Rinse the coin with water, brighten it with polish and cloth and begin the whole process again.N
