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- Mass of Na2CO3.H2O (g) = 2.12g (g) Mass of the CaCl2.2H2O (g) = 1.98g Mass of the top funnel + filter paper (g) = 15.85g Mass of top funnel + filter paper + CaCO3 collected (g) = 17.81g CaCl2 + Na2CO3 ==== CaCo3 + 2NaCl Theoretical yield in moles and grams? Moles of reagent in excess left unreacted? Mass of precipitate? Experimental yield? Percent yield?1. Balance the following equations:a) ____ Na2SO4(aq) + ____ Pb(C2H3O2)2(aq) → ____ NaC2H3O2(aq) + ____ PbSO4(s) i. How many moles of Pb(C2H3O2)2 are required to react with 1.67 moles Na2SO4? Use dimensional analysis.In batteries factory, the manager asked the technician to prepare a batch of battery acid with a concentration of 23.6% (wt %) as follows Raw materials (streams) Stream 1: Old weak battery acid (H2SO4) solution contains 16.9% (wt %) of H2SO4 (the rest is pure water) Stream 2:250 kg of 65.2 % H2SO4 How many kilograms of old weak battery acid (H2SO4) are needed to prepare the desired ?battery acid (23.6%) .a o 3313.43 Kg bo 1755.25 Kg .CO 1552.24 Kg .do 3875.14 Kg
- 1. Balance the following chemical equation: Fe2O3 + CO ------> Fe + CO2, answers are listed in order - 1st coefficient, 2nd coeficient, etc. and so on. (1st one is in front of Fe2O3, 2nd one in front of CO, etc. and so on) Group of answer choices a) 1,3,3,2 b) 2,3,2,3 c) 1,3,2,3 d) 1,2,2,2Balance the following equation in standard form and determine the sum of the coefficients. LiAlH4(s) + AlCl3(s) --> AlH3(s) + LiCl(s) Group of answer choices 9 11 10 12 8balance: KMnO4(aq) + Na2SO3(aq) + KOH → MnO2 + Na2SO4(aq) ; the coefficient for Na2SO3 is: (hint: keep MnO2 intact) A. 2 B. 1 C. 3
- 9.) Which set of coefficients balances the following equation? Cu(NO3)2 (aq) + (NH4)2S (aq) --> CuS (s) + NH4NO3 (aq) A) 1, 1, 1, 1 B) 1, 1, 1, 2 C) 2, 2, 2, 4 D) none of the aboveMass of Na2CO3.H2O (g) = 2.12g (g) Mass of the CaCl2.2H2O (g) = 1.98g Mass of the top funnel + filter paper (g) = 15.85g Mass of top funnel + filter paper + CaCO3 collected (g) = 17.81g CaCl2 + Na2CO3 ==== CaCo3 + 2NaCl Moles Na2CO3 reacting? Moles CaCO3 reacting? Moles CaCO3 produced by the LR? Theoretical yield in moles and grams? Reagent in excess? Moles of reagent in excess left unreacted? Mass of precipitate? Experimental yield? Percent yield?The balanced reaction of oxalic acid with potassium dichromate in an acidic solution is: 3H2C2O4(aq) + K2Cr2O7(aq) + 5H2SO4(aq) --> 2KHSO4(aq) Cr2(SO4)3(aq) 6CO2(g) 7H2O(I) In an experiment, 2.7000g of H2C2O4, 2.8500g of K2Cr2O7, and 3.5000g of H2SO4 are combined and 1.7500g of KHSO4 and 2.500g of Cr2(SO4)3 are recovered. 1) Find the limiting reagent. 2) Find the theoretical yield of both KHSO4 and Cr2(SO4)3 in grams. 3) Find the amounts of excess reagent left over in grams. 4) Find the Percent Yield of both KHSO4 and Cr2(SO4)3.
- mass of cuso4: 7.00g. mass of fe: 2.00g. mass of filter paper: 1.50g. mass of cu solid: 2.16g. mass of dried filter paper and cu solid: 3.96g. limiting reagent: cuso4. calculate the moles of cu(s) formed along with the moles of limiting reagent used and ratio of moles of cu(s) formed/moles of limiting reagent.Adipic acid, H2C6H8O4, is used to produce nylon. It is made commercially by a controlled reaction between cyclohexane ( C6H12 ) and O2:. (Only the 4th sub part (d) is needed to be answered). 2 C6H12 (l) + 5 O2 (g) → 2 H2C6H8O4 (l) + 2 H2O (g) (Given: Atomic Wts (g/mol): C= 12.01 ; H=1.01 ; O=16.00 ) If 25.0 g of cyclohexane is reacted with 20.0 g of O2, a. Identify the limiting reactant and excess reactant? b. How much in grams of the excess reactant will be left after the reaction? c. What is the theoretical yield in terms of the product adipic acid? d. If the actual yield is 33.5 g, what is the % yield of adipic acid?Please view the video* below and answer the following questions.https://www.youtube.com/watch?v=1ocQhkHw_MM1. Two reactions were demonstrated in the video above. Write the balanced equations for both reactions below.a.b.2. What catalyst was used in the decomposition of hydrogen peroxide?3. Which safety rule is broken during the demonstrations shown in this video?4. View the video and complete the table below.https://www.youtube.com/watch?v=_G7sNq7R29w Observations Balanced Reaction Equation 5. View the video and complete the table below.https://www.youtube.com/watch?v=yLsjsy_Dqd0 Observations Balanced Reaction Equation