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Question 11 1 pts 3 moles of A are mixed with 2 moles of B. What is the mole fraction of A (XA)? Write your answer to two decimal places (not asa fraction): Answer Mole PercentMultiplying the mole fraction by 100 gives the mole percentage, also referred as amount/amount percent (abbreviated as n/n%). For general chemistry, all the mole percents of a mixture add up to 100 mole percent. We can easily convert mole percent back to mole fraction by dividing by 100. So, a mole fraction of 0.60 is equal to a mole percent of 60.0%. Calculations with Mole fraction and Mole PercentCalculations with Mole fraction and Mole Percent Mole Fraction in Mixtures A mixture of gases was formed by combining 6.3 moles of O2 and 5.6 moles of N2. What is the mole fraction of nitrogen in the mixture? First, we must find the total number of moles with ntotal = nN2 + nO2. n t o t a l = 6.3 m o l e s + 5.6 m o l e s = 11.9 m o l e s ntotal=6.3 moles+5.6 moles=11.9 moles . Next we must divide the moles of N2 by the total number of moles: x ( mole fraction ) = ( moles N 2 moles N 2 + moles O 2 ) = ( 5.6 moles 11.9 moles ) = 0.47 x(mole fraction)=( moles N2 moles N2+ moles O2)=(5.6 moles11.9 moles)=0.47 The mole fraction of nitrogen in the mixture is 0.47. Mole Fraction in SolutionsMole fraction can also be applied in the case of solutions. For example, 0.100 moles of NaCl are dissolved in 100.0 mL of water. What is the mole fraction of NaCl? We are given the number of moles of NaCl, but the volume of water. First, we convert this volume to a mass by using the density of water (1.00 g/mL), and then we convert this mass to moles of water: 100 m L H 2 O × ( 1.0 g 1 m L ) = 100.0 g H 2 O × ( 1 moles 18.0 g ) = 5.55 moles H 2 O 100 mL H2O×(1.0g1mL)=100.0 g H2O×(1 moles18.0g)=5.55 moles H2O With this information we can find the total number of moles present: 5.55 + 0.100 = 5.65 moles. If we divide the moles of NaCl by the total number of moles, we find the mole fraction of this component: x = ( 0.100 m o l e s 5.65 m o l e s ) = 0.0176 x=(0.100moles5.65moles)=0.0176 We find that the mole fraction of NaCl is 0.0176. Mole Fraction with Multi-Component MixturesMole fractions can also be found for mixtures that are formed from multiple components. These are treated no differently than before; again, the total mole fraction of the mixture must be equal to 1. For example, a solution is formed by mixing 10.0 g of pentane (C5H12), 10.0 g of hexane (C6H14) and 10.0 g of benzene (C6H6). What is the mole fraction of hexane in this mixture? अधिक देखने के लिए क्लिक करें स्रोत : courses.lumenlearning.com What will be the mole fraction of a solution if the solution contains 0.1 moles of each A, B, and C?Answer: The question mole fraction of the solution is an incomplete one. It could be mole fractions of A or B or C in the solution. Mole Fraction of any component in a mixture is given by MOLE FRACTION = (NUMBER OF MOLES OF THE GIVEN COMPONENT)/(TOTAL NUMBER OF MOLES OF ALL COMPONENTS) Hence, ... What will be the mole fraction of a solution if the solution contains 0.1 moles of each A, B, and C? Ad by SonarCloud Which is the best tool to use for code quality? The only tool you need to code with confidence and merge clean code, every time. Get started for free. Sort Shubham Korde , B Tech Electrical Engineering, Indian Institute of Technology, Kanpur (2023) Answered 2 years ago The question mole fraction of the solution is an incomplete one. It could be mole fractions of A or B or C in the solution. Mole Fraction of any component in a mixture is given by MOLE FRACTION = (NUMBER OF MOLES OF THE GIVEN COMPONENT)/(TOTAL NUMBER OF MOLES OF ALL COMPONENTS) Hence, we get that mole fraction of A = 0.1/(0.1+0.1+0.1)= 0.33 Similarly, mole fraction of B and C will also come out to be 0.33. 4K viewsView upvotes Mario Zammit , former Retired Science Teacher Answered 2 years ago Related Why is the sum of a mole fraction equal to 1? Any fraction you add up is always equal to one. Why? Because a fraction is part of one whole e.g. if you cut up a cake into six portions each of the portions is a fraction of the whole cake - one sixth. So if you add up all 6 portions together you get one (whole cake)! Same applies to any fraction whether it’s ‘mole fraction’ or any system :) Sponsored by Forge of Empires Can you solve this equation in under 20 seconds? If so, you are likely to be in the top 5% of players in this award-winning strategic city building game. Jakob Krämer , studied Chemistry at Technical University of Berlin Answered 1 year ago · Author has 2.4K answers and 589K answer views Related What is the mole fraction for solution A and B in the link below? Well, that's impossible to say. I took a look at the table, and it is missing critical information: What is solution A? What is solution B? What is the precipitate formed? Without knowing this, it is impossible to calculate the mole fraction. But let me explain how to calculate the mole fractions in question: First, we need to determine the number of moles of A. We know that c= n V c=nV so n=c⋅V n=c⋅V So for the first row, n A =0.1mol/l⋅1ml=0.1mmol nA=0.1mol/l⋅1ml=0.1mmol Know, we need the number of moles of B: n B =0.2mol/l⋅19ml=3.8mmol nB=0.2mol/l⋅19ml=3.8mmol Now, we have to substract the precipitate: A reacted with B, Robert Taie , MSc Chemistry, University of Papua New Guinea (2000) Answered 2 years ago · Author has 386 answers and 272K answer views Related Why is a mole fraction equal to unity? The mole fraction is not equal to unity. However, the sum of the mole fractions of the components is equal to unity. For instance for a mole A and mole B, the mole fraction A, XA = mole A/(mole A + mole B), mole fraction B, XB = mole B/(mole A + mole B) XA + XB = mole A/(mole A + mole B) + mole B/(mole A + mole B) XA + XB = (mole A + mole B)/(mole A + mole B) = 1 (unity). Jeffrey Phillips , Sr. Graphic Designer, The University of Texas at Austin Answered 6 years ago · Author has 3K answers and 2.8M answer views Related What is an example of a mole fraction? I hope this helps: … (more) Muhammad Attaullah , BS Industrial Chemistry from GC University, Faisalabad. (2018) Answered 1 year ago · Author has 844 answers and 762.8K answer views Related What is the total mass in grams of 0.75 moles of SO2? No of moles = 0.75 mol Molar mass = 64 g/mol Now mass No of moles = (mass in grams)/molar mass 0.75 = (mass in grams)/ 64 Mass in grams of SO2 = 64 x 0.75 Mass in grams of SO2 = 48 g Sponsored by USAFIS This is the best time to apply for the Green Card DV Lottery! Get a chance to win and apply today! America is waiting for you with many amazing opportunities. Manan Hingorani , studied at Pandit Deendayal Energy University, Gandhinagar Answered 4 years ago · Author has 88 answers and 74.5K answer views Related Why is a mole fraction unitless? Originally Answered: Why mole fraction is unitless? Because if u divide something by that thing only u will get nothing… :) Antonio Daniels , former Learner 2020- Chemist Answered 1 year ago · Author has 3.7K answers and 1.3M answer views Related What is the mole fraction of a 3.6% NaOCl solution by mass? 3.6/100 solution 100 - 3.6 = 96.4 g H2O 3.6/74.5 g/mol = 0.0483 mol NaOCl 96.4/18 = 5.36 mol H2O /////////////////////////////////// XNaOCl = 0.0483 / (0.0483 + 5.36) = 0.0483/5.41= 0.009 XH2O = 5.36/5.41 = 0.991 Meave Gilchrist , former HS Science Teacher: Biology, Chemistry, Physics (1986-2003) Answered 2 years ago · Upvoted by Malcolm Sargeant , Degree level applied chemistry + 20yr experience in corrosion prevention and water treatment · Author has 2.8K answers and 1.8M answer views अधिक देखने के लिए क्लिक करें स्रोत : www.quora.com Write the formula to calculate the mole fraction?Click here👆to get an answer to your question ✍️ Write the formula to calculate the mole fraction? Question Write the formula to calculate the mole fraction?Suppose a solution contains two components A and B. The number of moles of A and B are nMedium Open in App Solution Verified by Toppr A and n B respectively. The mole fractions of A and B are X A and X B respectively. Then X A = n A +n B n A X B = n A +n B n B Also X B =1−X A Video Explanation Solve any question of Solutions with:- Patterns of problems > Was this answer helpful? 22 0 अधिक देखने के लिए क्लिक करें स्रोत : www.toppr.com |
If a solution contains same number of moles of A and B then what will be the mole fraction of A
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