CaCO3(s) → CaO(s) + CO2(g) Calculate the maximum mass of calcium oxide that can be obtained by heating 25 tonnes of calcium carbonate. (Relative atomic masses: C = 12, O = 16, Ca = 40)
[The answer is 25 (tonnes) gives 56x25 (tonnes)]
But I don't understand the method to work it out!!! Help please.
Mr is the formula mass, you work that out first and then you pick out the ratio of molecules for each element (These are the first steps, i'm not sure what to do after that, good thing the exams at 1:30!)
Mr is the formula mass, you work that out first and then you pick out the ratio of molecules for each element (These are the first steps, i'm not sure what to do after that, good thing the exams at 1:30!)
Omg, just realised the exam was in the afternoon... O.O MORE TIME!
how do you change grams to tonnes are you expected to know this??
You are expected to know that the mass in the mass=moles x mr equation is grams and that 1 tonne is equal to 1,000,000 grams. I've done these sorts of question in my past papers.
You are expected to know that the mass in the mass=moles x mr equation is grams and that 1 tonne is equal to 1,000,000 grams. I've done these sorts of question in my past papers.
Idk how the answer is 25 I keep getting 14, 56 x 0.25 is 14 anyway?
yes this is what I am getting! i divided 100 by 4 to get 25, and did the same to 56 and it's 14. i know it's in tonnes but the conversion would be the same
CaCO3(s) → CaO(s) + CO2(g) Calculate the maximum mass of calcium oxide that can be obtained by heating 25 tonnes of calcium carbonate. (Relative atomic masses: C = 12, O = 16, Ca = 40)
[The answer is 25 (tonnes) gives 56x25 (tonnes)]
But I don't understand the method to work it out!!! Help please.
It's 14 tonnes
It can't be 25 tonnes because that's the mass of Calcium Carbonate
Omg, just realised the exam was in the afternoon... O.O MORE TIME!
Dude! It's at 1:30, I should be sleeping but I just can't I have a feeling this paper will be hard Make sure to revise soluble salts! I heard that will be the 6 marker