What is the increment of change in a series of straight-chain alkanes?
CH
CH3
CH4
CH2
Answer:
CH2
So first you work out the ratio. The formula tells us that for every one 'amount' of Ca and Cthere will be 3x the amount of oxygen. So, the ratio is 1:1:3, (=5) therefore 70g divided by 5 = 14.
If 70g of CaCO3 is heated there will be (1x14) 14g Ca, (1x14) 14g C and (3x14) 42g of O.
Weight of CaO= 42+14, 56g
(I hope this is right! Good luck xx)
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