Comments

• If the data in the problem are good, then you should not round a result that ends in 0.50. I would round down or up if the fraction were 0.10 or less and greater than 0.90. But if you get 0.50, double everything to change the X.50 into an integer. T…

  in empirical formula problem? Comment by hpv June 2021
• Mass of chlorine (Cl) = mass of iron chloride - mass of iron = 7.55 - 2.60 = 4.95 g Cl. Convert g of Fe and g of Cl to moles by dividing by the atomic weights for each on the periodic table. 2.60 g Fe x (1 mole Fe / 55.85 g Fe) = 0.0466 moles …

  in Chemistry problem??? (Empirical Formulas)? Comment by hpv May 2021
• First you have to write the reaction that they are talking about ... forming ethylene gas (C2H4) from its elements (C and H2) at 25 C. 2C(s) + 2H2(g) ==> C2H4(g) Let me label the equations that were given. (Equation 1) C2H4(g) + 3O2…

  in C2H4(g) + 3O2(g) => 2CO2(g) + 2H2O(l) ΔHf = -1411 kJ? Comment by hpv May 2021
• First you have to write the reaction that they are talking about ... forming ethylene gas (C2H4) from its elements (C and H2) at 25 C. 2C(s) + 2H2(g) ==> C2H4(g) Let me label the equations that were given. (Equation 1) C2H4(g) + 3O2…

  in C2H4(g) + 3O2(g) => 2CO2(g) + 2H2O(l) ΔHf = -1411 kJ? Comment by hpv May 2021
• First you have to write the reaction that they are talking about ... forming ethylene gas (C2H4) from its elements (C and H2) at 25 C. 2C(s) + 2H2(g) ==> C2H4(g) Let me label the equations that were given. (Equation 1) C2H4(g) + 3O2…

  in C2H4(g) + 3O2(g) => 2CO2(g) + 2H2O(l) ΔHf = -1411 kJ? Comment by hpv May 2021
• Mass of chlorine (Cl) = mass of iron chloride - mass of iron = 7.55 - 2.60 = 4.95 g Cl. Convert g of Fe and g of Cl to moles by dividing by the atomic weights for each on the periodic table. 2.60 g Fe x (1 mole Fe / 55.85 g Fe) = 0.0466 moles …

  in Chemistry problem??? (Empirical Formulas)? Comment by hpv May 2021
• If the data in the problem are good, then you should not round a result that ends in 0.50. I would round down or up if the fraction were 0.10 or less and greater than 0.90. But if you get 0.50, double everything to change the X.50 into an integer. T…

  in empirical formula problem? Comment by hpv May 2021