The molarity of the stock solution is 1.25 M.
<u>Explanation:</u>
We have to find the molarity of the stock solution using the law of volumetric analysis as,
V1M1 = V2M2
V1 = 150 ml
M1 = 0.5 M
V2 = 60 ml
M2 = ?
The above equation can be rearranged to get M2 as,
M2 =
Plugin the values as,
M2 =
= 1.25 M
So the molarity of the stock solution is 1.25 M.
Explanation:
Number of oxygen molecules = 10 billion =
Number of hydrogen molecules = 10 billion =
Number of molecules of hydrogen peroxides = 10 billion =
Moles of oxygen gas :
Moles of hydrogen gas :
Moles of hydrogen gas :
Number of moles in hydrogen gas, oxygen gas and hydrogen peroxide is same.
Total number of atoms in molecules of oxygen:
(2 atoms in 1 molecule)
Total number of atoms in molecules of hydroegn :
(2 atoms in 1 molecule)
Total number of atoms in molecules of hydrogen peroxide:
(4 atoms in 1 molecule)
Number of oxygen atoms and number of hydrogen atoms are equal but individually they are not equal to number of atoms in hydrogen peroxide.