show all work Show all work When calcium carbonate is added to hydrochloric acid
ID: 787139 • Letter: S
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When calcium carbonate is added to hydrochloric acid, calcium chloride, carbon dioxide, and water are produced. CaCO3(s) + 2HCl(aq) rightarrow Cacl2(aq) + H2O(l) + CO2(g) How many grams of calcium chloride will be produced when 28.0 g of calcium carbonate are combined with 12.0 g of hydrochloric acid? Which reactant is in excess and how many grams of this reactant will remain after the reaction is complete? A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula? The molecular mass of the compound is 132 amu. What is the molecular formula?Explanation / Answer
1) 8 moles of SO2 can give 3moles of S8
then 87/64 moles 0f SO2..............?
= o.502 moles of S8 forms
= 64.02 gm of SO2 forms
2) 2 moles of HCl can give 1 mole of CaCl2
0.32 moles of HCl can give ?
=0.16 moles of CaCl2 = 17.76 gm
CaCO3 is in excess
9.9 gm of CaCO3 is in excess amount
3) C=54.53/12=4.5
H =9.1/1 =9.1
O = 36.32/16 =2.2
C4H9O2
mol.foormula =n* emperical formula
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