All formulas from lesson- Some basic concepts of chemistry.
By BYJU'S Exam Prep
Updated on: September 13th, 2023
1) Number of molecules in W(g) of substance = wxNA/gram molecular mass
Where NA is the Avogadro number which is equal to 6.022 x 1023
2) Number of gram atoms = w/gram atomic mass
3) Number of gram molecules = w/gram molecular mass
4) Number of molecules in V liter of gas at STP = VxNA/22.4
5) Mass of 1 atom of element = gram atomic mass/NA
6) Mass of 1 molecule of substance = molar mass/NA
7) Molality, m = Mx1000/ (1000ρ – Mxw)
Where M = Molarity
m = molality
ρ = density of the solution in g/ml
w = molecular weight (molar mass) of solute in g/mole
Table of content
8) Molarity, M = n/V
Where n is the number of moles of the solute
V is the volume of the solution in liters.
9) Molecular mass = 2 x vapour density
10) Number of molecules in n moles of substance = nxNA
11) Temperature in kelvin can be converted to degrees celsius as
T(K) = T(°C) + 273.15
12) Temperature in Fahrenheit can be converted to degrees celsius as
T(F) = (9/5)T(°C) + 32
13) Mass percent = Mass of solute/Mass of solution x 100
14) Mole fraction of A = number of moles of A/number of moles of solution
Therefore, all formulas from the lesson- Some basic concepts of chemistry are mentioned above.
Summary:
All formulas from the lesson- Some basic concepts of chemistry.
All formulas from the lesson- Some basic concepts of chemistry are mentioned above.
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