What is the percent yield of KOH when 22.4 grams of KO react with an excess...
How many grams of oxygen are formed when 6.21 moles of KOH are formed? 4 KO(s) + 2 H_2O(l) rightarrow 4 KOH(s) + O_2(g) 19.9g 27.9g 49.7g 3.59g 11.7g Consider the following balanced reaction. How many grams of water are required to from 75.9g of HNO_3? Assume that there is excess NO_2 present. Molar masses: H_2O = 18.02g. HNO_3 = 63.02g. 3 NO_2(g) + H_2O(l) rightarrow 2 HNO_3(aq) + NO(g) 38.0g 21.7g 43.4g 10.9g 26.5g A 12.39g sample of phosphorus...
How many grams of oxygen are formed when 6.21 moles of KOH are formed?4 KO(s) + 2 H2O(l) ? 4 KOH(s) + O2(g)
1- a. If 50.00 grams of octane react with 60.00 grams of oxygen at 75% yield, what is the mass of the water produced? What is the mass of the excess reagent? 2- When 50.00 mL of A (aq) was titrated with .6754 M B (aq), the buret reading changed from 88 mL to 35.25 mL. What is the concentration of A? 2 A (aq) + 5 B(aq) → 6 D (g) + 3 E (aq) 3- If 26.25 mL...
For the following reaction, 55.9 grams of diphosphorus pentoxide are allowed to react with 24.7 grams of water diphosphorus pentoxide (s) + water (1) phosphoric acid (aq) What is the maximum amount of phosphoric acid that can be formed? What is the FORMULA for the limiting reagent? What amount of the excess reagent remains after the reaction is complete? grams For the following reaction, 5.73 grams of water are mixed with excess carbon monoxide. The reaction yields 9.36 grams of...
If 150.0 grams of Fe2O3 react in excess carbon monoxide, what mass of iron will be produced? If in an experiment only 87.9 grams of Fe were recovered, what is the percent yield of this reaction
d) how many grams of hydrochloric acid are produced when 7.11x1024 molecules of water react? 9. Consider the following reaction: BaHo + MM - 27.68 3 O2 → MM - 32.00 2 HBO2 MM - 43.82 + 2 H2O MM - 18.02 a) If 88.2g of diborane, BaHo, are reacted with 125.7g of oxygen, what is the theoretical yield of water? b) Which reactant is the limiting reactant? c) Which reactant is in excess? d) How many grams of the...
Question 6 of 13 How many grams of precipitate are formed when 250.0 mL of 0.100 M ZnCl2 is mixed with excess KOH in the following chemical reaction? ZnCl2 (aq) 2 KOH (aq) 2 KCI (aq) Zn (OH)2 (s) + 3 4 5 6 C 7 +/- 0 x 10 1
16. How many grams of steam and iron must react to produce 375 g of magnetic iron oxide, Fe3O4? 3 Fe(s) + 4 H2O(g) Fe3O4(s) + 4 H2(g) 18. Mercury can be isolated from its ore by the reaction 4 HgS + 4 CaO → 4 Hg + 3 CaS + CaSO4 (a) How many moles of CaS are produced from 2.5 mol CaO? (b) How many grams of Hg are produced along with 9.75 mol of CaSO4? (c) How many...
For the following reaction, 4.41 grams of iron are mixed with excess oxygen gas . Assume that the percent yield of iron(II) oxide is 75.5 %. iron(s) + oxygen(g)------>iron(II) oxide(s) What is the theoretical yield of iron(II) oxide ? grams What is the actual yield of iron(II) oxide ? grams
13. b) Suppose only 4.02 grams of Fe(NO3), are recovered in the above reaction. What is the percent yield of Fe(NO), will form? 14. For the equation Pb(NO3)2 +K SO, à 2KNO, + PbSO, 22.9 grams of Pb(NO), is reached with an excess of K, SO, and 2.41 grams of KNO, are recovered. What is the percent yield? 15. Let's say the reaction H,SO, + 2 KOH à K.SO. + 2H,0, is known to proceed by a 20.85% yield via...