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The relative formula madd of a compound comes from the total mass of all of the elments within the compound.
So in the case of calcium carbonate (CaCO3) we have;
...
Use the equation mass(g) = moles x MrThe moles are given in the question, moles= 0.1 molLook at a periodic table to work out the Mr of CaCO3: Ca= 40 C= 12 O= 16 Therefore Mr= 40+12+(16x3) = 100S...
In diamond the carbon atoms are bonded to four other atoms. Whereas, in graphite each carbon atom is only bonded to three other atoms. Therefore, there are delocalised (free) electrons in graphite, which ...
Ar of Magnesium = 24; Ar of Oxygen = 16
number of moles = mass divided by Ar
number of moles of Mg = 2.4/24 = 0.1
number of moles of Oxgen = 1.6/16 = 0.1
CaCO3 decomposition:
CaCO3 -> CaO + CO2
The first thing to do here is to calculate the relative formula mass of CaCO3 and COJHAnswered by Joshua H. • Chemistry tutor95355 Views
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