Number of molecules in 7.4 gram of ninhydrin
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Answered by
8
Molecular weight or mass of NinHydrin = 9 * 12 + 6 * 1 + 16 * 4
= 178
As per Avogadro's law we have that one mole ( 178 gms) of NonHydrin contains N = avogadro number ie., 6.023 * 10²³ molecules.
so number of molecules in 7.4 gms are: 6.023 * 10²³ * 7.4 / 178
= 2.502 * 10²²
= 178
As per Avogadro's law we have that one mole ( 178 gms) of NonHydrin contains N = avogadro number ie., 6.023 * 10²³ molecules.
so number of molecules in 7.4 gms are: 6.023 * 10²³ * 7.4 / 178
= 2.502 * 10²²
Answered by
10
Chemical formula of Ninhydrin is C₉H₆O₄
Molar mass = 9×12 + 6×1 + 4×16 = 108+6+64 = 178g
178 gram of Ninhydrin contains = 1 mole = 6.022×10²³ molecules
1 gram of Ninhydrin contains = 6.022×10²³/178 molecules
7.4 gram of Ninhydrin contains = 7.4×6.022×10²³/178 = 2.561×10²² molecules
So number of molecules in 7.4 gram Ninhydrin is 2.561×10²² molecules.
Molar mass = 9×12 + 6×1 + 4×16 = 108+6+64 = 178g
178 gram of Ninhydrin contains = 1 mole = 6.022×10²³ molecules
1 gram of Ninhydrin contains = 6.022×10²³/178 molecules
7.4 gram of Ninhydrin contains = 7.4×6.022×10²³/178 = 2.561×10²² molecules
So number of molecules in 7.4 gram Ninhydrin is 2.561×10²² molecules.
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