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How should I revise for my A Level exams?

How should I revise for my A level exams?

There are many ways in which you can revise for your exams and they don’t have to be boring – you don’t have to sit and read a textbook ov...

TN
5168 Views

What mass of CO2 will be produced when 50 g of CaCO3 decomposes?

CaCO3 decomposition:

CaCO3 -> CaO + CO2

The first thing to do here is to calculate the relative formula mass of CaCO3 and CO

JH
Answered by Joshua H. • Chemistry tutor
98850 Views

The relative formula mass of CaO is 56 and the relative formula mass of CO2 is 44. What is the mass of CaO that can be obtained from 200 g of CaCO3. CaO3 -> CaO + CO2

We are given the relative formula mass (RFM) of CaO and CO2, we should therefore calculate the RFM of CaO3:

RFM of CaCO3 = 40 + 12 + (16 x 3) =...

JH
Answered by Joshua H. • Chemistry tutor
32012 Views

What is the relative formula mass of CaCO3?

The relative formula mass (RFM) is simply just a sum of the atomic masses that make up the compound in question.

Ca = 40

C = 12

O = 16

RFM of CaC...

JH
Answered by Joshua H. • Chemistry tutor
72520 Views

24 g of Magnesium reacts with 16 g of Oxygen to produce 40 g of magnesium oxide. What mass of magnesium would you need to produce 10 g of magnesium oxide?

There are two ways to work this out, one is a lot simpler than the other, I will post the simpler method here.

The relative formula mass of magnesium oxide, MgO (40), is just a sum of the...

JH
Answered by Joshua H. • Chemistry tutor
76873 Views

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