Interpretation:
Pathway for finding “moles of B” from “grams of A” using the conversion factors has to be chosen from the given options.
Concept Introduction:
Using the
Molar mass of a substance gives a relationship between the number of grams and number of moles of that particular substance.
The Chemical formula subscript also provides relationship between the number of moles of substance to the number of moles of its individual components present in the substance.
The moles of compound are related to moles of another compound by the coefficients present in the balanced chemical equation.
All the above relationship can be put into a single diagram as shown below,
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General, Organic, and Biological Chemistry
- The problem How many grams of O2 are needed to produce 2.00 moles of H2O via the chemical reaction 2H2 + O2 2H2O? is characterized as a a. moles of A to grams of A problem b. grams of A to moles of B problem c. moles of A to grams of B problem d. no correct responsearrow_forwardAnswer 1 and 2 PROBLEM SOLVING. Show all pertinent computations Express final answer up to the fourth decimal place. 1.ln the preparation of aspirin, 6.0 grams of salicylic acid was made to react with acetic anhydride gnbxdride forming 4 grams of aspirin. Calculate the % yield of aspirin. 2. calculate the amount of sodium salt of aspirin obtained from the preparation.arrow_forwardConsider the following unbalanced reaction: XNO3 (aq) + CaCl2 (aq) -> XCl (s) + Ca(NO3)2 (aq) If 30.8 g of CaCl2 produced 79.6 g of XCl, determine the identity of X. Quantify your response.arrow_forward
- Give answer to all parts? Initial Temp of HCl: 22.96 C Final Temp of HCl: 28.30 C Moles of HCl: .05 moles Moles of NaOH: .05 moles Cs water: 4.184 J/g C Accepted delta Hrxn: -55.8 kJ/mol 1. what is the qwater. pls include formula. 2. calculate delta Hrxnn using the moles, temp and cswater 3. calculate delta Hrxn % errorarrow_forwardHow many moles of NO2 you should obtain if 0.60 mol O2 reacts with excess of NO? 2 NO + O2 ------> 2 NO2 Round result to two places past decimalarrow_forwardCalculate the percentage by mass of the indicated element in the following compounds: (a) carbon in CS(NH2)2. ANSWER: % (b) carbon in C18H27NO3. ANSWER: % (c) carbon in C2H6. ANSWER: %arrow_forward
- Instruction: Final answer should be expressed with least number of significant figures. Question: 100.0 grams of sodium sulfate reacts with 50.00 grams of barium nitrate. A-C IS ALREADY ANSWERED. ANSWER D-F QUESTIONS. a) What is the balanced equation? b) How many grams of barium sulfate will form? c) What is the limiting reactant? d) How much limiting reactant was used up in the reaction? e) How much excess reactant was used up for this reaction? f) How much of the excess reactant was left?arrow_forward4 C3H6 (g) + 6 NO (g) → 4 C3H3N (g) + 6 H2O (g) + N2 (g)• How many grams of NO would be left over (unreacted) when 30.00 g of C3H6 reacts with 55.00 g of NO?Answer grams of NOMolecular WeightsC3H6 42.081 g/molNO 30.006 g/molC3H3N 53.064 g/molH2O 18.015 g/molN2 28.014 g/molarrow_forwardCalculate the number of moles of H2 produced from 8.62 moles of Fe by the following reaction. 3 Fe + 4 H2O ==> Fe3O4 + 4 H2 Answer to 2 decimal places.arrow_forward
- Which of the following is the correct conversion factor setup for the problem How many grams of H2O can be produced from 3.2 moles of O2 and an excess of H2S via chemical reaction 2H2S + 3O2 2H2O + 2SO2? a. 3.2molesO2(32.00gO21moleO2)(18.02gH2O32.00gO2) b. 3.2molesO2(2molesH2O3MolesO2)(18.02gH2O1moleH2O) c. 3.2molesO2(32.00gO21moleO2)(2molesH2O3MolesO2) d. no correct responsearrow_forward17.For the unbalanced equation: Mg3N2 + H2O -----------> Mg (OH) 2 + NH3 How many moles of Mg (OH) 2 are formed from 125g of H2O?Necessary answer. Unique option. A) 2.5 moles of Mg (OH) 2 B) 1.25 moles of Mg (OH) 2 C) 6.94 moles of Mg (OH) 2 D) 3.47 moles of Mg (OH) 2 E) None of the above.arrow_forwardHow many moles of H2 will be produced from 8.00 moles of Fe? 2 Fe + 6 HC2H3O2 → 2 Fe(C2H3O2)3 + 3 H2 Group of answer choices: 5.33 moles 4.00 moles 12.0 moles 48.0 molesarrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning