Wednesday 24 November 2010

Harder Mole Conversion" November 23

First of all,  Let's take a look the picture from below
It has shown us the relationship between molar mass, molecule, gram and atom.
In the other hand, it's a MOLAR MAP that direct us to convert number into a certain unit that we want

So, eg1: If we want to convert GRAM to ATOM,  what can we do? Let's take a look at this video from bellow =)

So basiclly, "Harder Mole Conversion" is just based on the simple mole conversion, "BUT" it takes more than one STEP to reach the answer

Friday 19 November 2010

Atomic Mass, Formula Mass and Molar Mass + Mole Conversions - Nov 19

Atomic MassAtomic massthe relative mass of atoms in ATOMIC MASS UNITS (u).
 i.e.
Atomic Mass of He is 4.00u
Atomic Mass of O is 16.0uAtomic Mass of C is 12.0u
Formula Mass: Total
mass of all the atoms in the formula of an ionic compound in Atomic Mass Units
i.e.
NaCl
Atomic mass of Na = 23.0 , Cl = 35.5
= 23.0+ 35.5 = 58.5u


CuCO3
Atomic mass of Cu = 63.5 , C = 12, O3 = 16+16+16 = 63.5 + 12 + 3(16) = 123.5u

Molecular Mass: Total mass of all the atoms that make up a molecule of a covalent compound, organic compound or a polyatomic element in ATOMIC MASS UNIT (u)
i.e
C6H12O6
C6 = 6(12) , H12 = 12(1), O6 = 6(16)= 6(12) + 12(1) + 6(16) = 180u
Molar Mass : mass of mole (6.022 x 10^23 particles) of a substance and is the same numerial value of Atomic mass, formula mass, or molecular mass but expressed
IN GRAMS PER MOLEi.e.
the molecular mass of NO is 26.0 u and the molar mass of
NO is 26.0g/moleAs the molecular mass and molar mass are both have the same result, but they are just different express =)

 Mole Conversions


As the picture have shown from above, that's the relationship between Mole, Atoms, Gram and ParticlesIf you are still having a lot of WONDERING about THOSE information i 've shown from above.
Please leave a comment, or contact me directly by e-mail =)