shazanah95
29.07.2019 •
Chemistry
Only answer correctly, will give brainliest as soon as i can. when calcium carbonate is heated, it breaks down into calcium oxide and carbon dioxide. caco3 (s) → cao (s) + co2 (g) question: 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. 1.0 l 5.6 l 22.4 l 11.2 l
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Ответ:
Explanation :
25g of CaCO3 is 25g/100g/mol = 0.25 mol.
If 1 mol of gase is 22,4l then
V of 0.25 mol = 0.25 * 22.4 = 5.6 l
Ответ:
Measuring its density and comparing your result to a list of known densities, or other properties that give you useful info
Explanation:
You can use observations about substances to form a hypothesis about the substance by comparing it to others. Ex: if something is magnetic it must be made of one or more of the elements iron, cobalt, or nickel.