I'm in K12 online school but some of the lessons are absolutely horrendous at explaining anything, and this was one of those lessons. I don't understand any of this. I don't even really know how to explain what I'm having trouble with because I don't know what it is.
But here's some of the...
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I'm in K12 online school but some of the lessons are absolutely horrendous at explaining anything, and this was one of those lessons. I don't understand any of this. I don't even really know how to explain what I'm having trouble with because I don't know what it is.
But here's some of the questions I'm asked during quizzes:
1. "For the oxidation of glucose (C6H12O6 + 6O2 → 6H2O + 6CO2), how many moles of oxygen will it take to consume 6 moles of glucose?"
2. "You are asked to make 112 g of iron from iron oxide and excess carbon monoxide.
Fe2O3 (s) + 3CO (g) → 2Fe (l) + 3CO2 (g)
Approximately how many grams of iron oxide must you use?"
3. "When calcium carbonate is heated, it breaks down into calcium oxide and carbon dioxide.
CaCO3 (s) → CaO (s) + CO2 (g)
If you heat 25 g CaCO3, approximately what volume of carbon dioxide will you make? Assume the conditions of temperature and pressure are such that 1 mole of any gas will occupy 22.4 L."
I finished the quiz and already know the answers (1 is 36, 2 is 160 g, and 3 is 5.6 L) but that's only because I looked them up. I don't get any of it and have no idea how to determine any of these by myself. Please explain this in a thorough yet easy to understand way.
4 answers
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1 week ago