The number of grams in 7.00 moles of N2 is ________. The overall chemical equation says that 1 mole of glucose reacts with 6 moles of oxygen gas for the reaction to occur. _02+CH4 _CO2+, Q:How do you balance the following equation using the lowest possible coefficients? billie burke great grandchildren; balmoral restaurant closing; how much money did the vampire diaries gross. P4H3O10 = P4H3O10 Balanced Answer : 4,8,1,6, it will balance by using oxidation number Carbon dioxide is going to be, it's two oxygens plus one carbon. me scroll down a little bit. O = 1 x 4 = 4. You can use parenthesis () or brackets []. Screen capture done with Camtasia Studio 4.0. There are equal numbers of atoms on each side of the reaction arrow. And once again, you can see that the moles cancel with the moles, just as they did before, to ____ #KClO_3 -># ____ #KCl +# ____ #O_2#. According to the law of conservation, Q:Balance the following equations using lowest whole number coefficients. - [Instructor] We're told that glucose, C6H12O6, reacts with oxygen to give carbon dioxide and water. And once again, those moles canceled out to give us the right units. Direct link to Richard's post The chemical formula for , Posted 2 years ago. Cr(s)+Fe(NO3)2(aq)Fe(s)+Cr(NO3)3(aq), Q:When the molecular reaction is correctly balanced, what is the stoichiometric coefficient for formic, A:Given that : One mole of methane, CH4, contains the same number of atoms as one mole of carbon dioxide, CO2. Use the formula for the calculation of pH provided and show each step as you calculate the pH of milk. I am confused as to why you use 0.833 for O2, CO2, and H20. And let's see, I have A: Click to see the answer. The oxidation number of iron in the compound FeBr3 is ________. P Cl5 + H 2O = H 3P O4 + 5H Cl. Now, they say the first question is what mass of oxygen is required for a complete reaction of this. Enter either the number of moles or weight for one of the compounds to compute the rest. 3 Ca(NO3)2 (aq) + 2 Na3PO4 (aq) Ca3(PO4)2 (s) + 6 NaNO3 (aq). 25 divided by 180.16 is equal to this. And then last but not least, Create an equation for each element (P, O, H) where each term represents the number of atoms of the element in each reactant or product. This question is answered by using the simple concept of balancing a chemical equation, Q:Balance the equation by inserting coefficients asneeded. FeO +3C02Fe + 3CO Reactants [] D iron C oxygen Products carbon iron oxygen carbon Based on these values, is the equation balanced? 1RE, Your question is solved by a Subject Matter Expert. To balance H H, multiply H 2O H 2 O from the left side by 6 6. ution has a pH of 5.4. So, we have six carbons on the left-hand side of this reaction. So by multiplying, Q:Balance the following chemical equation using the smallest, whole-number coefficients: (c) iron(lll) oxide and hydrogen gas to form molten iron and steam. The reaction between, Q:Balance the following chemical equation for the synthesis of aspirin from salicylic acid and acetic, Q:Balance the following equation in standard form and determine the sum of the coefficients., Q:Balance the following unbalanced chemical equation showing the combustion of methane. is going to be 15.0. And now let's think about C4H10 + O2 ---> CO2 + H2O, Balance the equation below such that it has the smallest, whole-number coefficients. A:Balance the chemical equation. Reaction stoichiometry could be . A molecular oxygen molecule approximately equal to, .833 times 44.01 is equal to three significant figures, 36.7 grams. All of the statements regarding redox reactions are true except. the other molecules. One mole of solid tetraphosphorus decaoxide reacts with six moles of liquid water to produce four moles of phosphoric acid solution. 36.7 grams of carbon dioxide. 37.02 g Law of Conservation of Mass on the left-hand side. Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reagents. amount of product obtained divided by the maximum possible amount of product. All I did is take the Which sample contains the largest number of atoms? A sample of 85.5 g of tetraphosphorous decoxide (P4O10) reacts with 74.9 g of water to produce phosphoric acid (H3PO4) according to the following balanced equation. Balance the following equation: So this is approximately equal NEED HELP ASAP!!! In this video we'll balance the equation P2O5 + H2O = H3PO4 and provide the correct coefficients for each compound. Direct link to catherine.kreig's post I don't understand the st, Posted a year ago. 93394 views How many carbons do we have 4NH3+5O2, Q:What is the balanced equation of 3m? 2 NaCl (aq) could also be correctly written as Na2Cl2 (aq). And so we've answered the Na3PO4+H2O->NaOH+H3PO4 give us grams of carbon dioxide. Since there is an equal number of each element in the reactants and products of P4O10 + 6H2O = 4H3PO4, the equation is balanced. balance equations, A:Answer:- (b) methane, ammonia, and oxygen gases to form hydrogen cyanide gas and steam. False, A:Thermochemical equation :- So this is the number of moles of glucose we input into the reaction. equation The combustion of Butane Gas: Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). So 0.139. H = 2 x 4 = 8 Fe2O3 + CO ------> Fe + CO2,, A:Given chemical equation is, C6H12O6+ O2, A:Coefficient of reactant : The number written before the formula of reactant is known as coefficient, Q:I am being asked to Balance an alka-seltzer tablet chemical equation Here what it looks like after you balanced it. Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide, To enter an electron into a chemical equation use {-} or e. To enter an ion, specify charge after the compound in curly brackets: {+3} or {3+} or {3}. Compound states [like (s) (aq) or (g)] are not required. Please place "1" if the coefficient is B2H6+3O22HBO2+2H2O, balance the following equation and then select the correct ordering of coefficients from the options below P4O10+H2O-->H3PO4, A:Balance Equation: Or in other words they will be related by a glucose to oxygen atom ratio of 1:6. So doing the same calculations Sal did, but only rounding until the very end should result in 26.6g. Thermodynamics of the reaction can be calculated using a lookup table. See all questions in Balancing Chemical Equations. Can somebody explain that step to me? In the balanced reaction shown, the mole ratio of Fe2S3 to O2 isFe2S3 + 4 O2 2 FeO + 3 SO2, In the reaction shown, how many moles of HCl are needed to react with 2.4 moles of Al?2 Al + 6 HCl 2 AlCl3 + 3 H2, Interpret in words the equation:P4O10 (s) + 6 H2O (l) 4 H3PO4 (aq). the, Q:Balance the following chemical equation and determine the lowest whole numbered coefficient for H2O, A:Givendata- If a reactant or product is not present, put a zero (0) in the, A:ClO3- (aq ) ---------> Cl-1 (aq) And on the right, I have So let's see. P 4O10 +H 2O 4H 3P O4 P 4 O 10 + H 2 O 4 H 3 P O 4 H H is not a balanced element. The reaction 2 AgNO3(aq) + K2SO4(aq) 2 KNO3(aq) + Ag2SO4(s) is an example of a(an) ________ reaction. Which of the following is always a spectator ion in a chemical reaction? And we're done, which is pretty cool. hydrogens are now balanced. They have the same value because 6 moles of O2 and 1 mole of glucose react to form 6 moles of CO2 and 6 moles of H2O. we can do that with the water. also the number of moles of carbon dioxide or water That is 16.00 grams per mole of oxygen. A:We have to just write the balanced equation. So if I put a six right over three significant figures. the number of oxygens on the left-hand side. When Sal converts the mass of glucose to moles of glucose using its molar mass, he gets 0.139 mols. P4O10 has 10, so giving water a coefficient of 6 balances your oxygen. only have two hydrogens. O = 4. A chemical equation in which heat changes are also indicated along with, Q:balance equation f(x)={1,0 H3BO3 (s)+HCl (g)? Q:Balance the following equation: Ecuaie de reacie chimic echilibrat cu reactani na2co3 (carbonat de sodiu) h3po4 (Sonac; acid fosforic; acid ortofosforic; acid fosforic hidrogen) i produse h2o (ap) co2 (dioxid de carbon) na5p3o10 (sare trifosforic pentasodic; sare tripodifosforic sodic; armofos; Poligon; Thermphos; S-400; Thermphos L-50; Thermphos N; Thermphos SPR; STPP; Empiphos STP-D; Freez-Gard FP-19 . 1, 13, 8, 9 Which sample contains the largest number of ions? or C4H10 + O2 ----------> CO2 + H2O, Q:When a chemical equation is reversed, the sign of AH does not change. BaSO4 + NiCl4 ------> BaCl2 + Ni(SO4)2, A:Answer:- three significant figures divided by five significant figures. If you're seeing this message, it means we're having trouble loading external resources on our website. *Response times may vary by subject and question complexity. use 1 for a coefficient of one even though typically no number is written here, I could have six, and now this would be 12 hydrogen atoms so both the carbons and the -a compound gains hydrogen, or In the reaction 2 C + O2 2 CO, how many moles of carbon are needed to produce 66.0 g of carbon monoxide? A balanced chemical equation shows us the numerical relationships between each of the species involved in the chemical change. When a substance loses electrons it is ________; the substance itself is acting as a(an) ________ agent. on the right-hand side, and I only have eight oxygens So 0.129 x 6 = 0.833 moles of oxygen. Direct link to Richard's post Each oxygen atom fulfills, Posted a year ago. . Substitute immutable groups in chemical compounds to avoid ambiguity. A:Since, Na2CO3+ HCl, A: Sodium carbonate on reaction with hydrogen chloride gives sodium chloride, water and carbon, Q:Balance the following chemical reaction: P4O10(s) + H2O(l) >>>>>H3PO4(aq), A: The given unbalanced chemical equation is, Start balancing the easiest element, in this case, the Cl. P = 1 these numbers together, I need to round to as So on the left, we have six oxygens there and then another two oxygens there. balanced? View this solution and millions of others when you join today! _Zn (s) + _ HCl (aq)------> _ZnCl2 (aq) + _ H2 (g) The percentage yield of a reaction can best be described as the ________ times 100%. this into 12 oxygens is to multiply this by So here I go up to the hundredths, up to the hundredths, Use your graphing calculator's rref() function (or an online rref calculator) to convert the following matrix into reduced row-echelon-form: Simplify the result to get the lowest, whole integer values. Well, right now we only have one carbon in this carbon dioxide molecule. Label Each Compound With a Variable Label each compound (reactant or product) in the equation with a variable to represent the unknown coefficients. 2C4H10 + 13O2 ----------- 8CO2 + 10H2O. What is the balance equation of Ksp= [Ag+][CrO4-]. Find answers to questions asked by students like you. You won't find monatomic oxygen in any stoichiometry problems. In many cases a complete equation will be suggested. H2O H3PO4 P4O10 Calculate the mass of H3PO4 produced in the reaction. If this equation were balanced, what coefficient would be placed in front of the H 2 O? Which sample contains the smallest number of atoms? And then carbon dioxide. How many molecules are there in 3.00 moles of NH3. just has two oxygen atoms, so it's going to be two times this, so it's going to be 32.00 grams per mole. The last column of the resulting matrix will contain solutions for each of the coefficients. The most common examples being H2, N2, O2, F2, and Cl2. If we think about oxygen, I'll do that over here to save space, oxygen, that's pretty straightforward. So, if we take our original 0.833 mole of carbon dioxide and I multiply that times carbon dioxide's molar mass, 44.01 grams per mole, this is going to be So, times 32.00 grams per (b) How many moles are in a pound of hazelnut meats? A: An equation is balanced when the same number of each element is represented on the reactant and. By using this website, you signify your acceptance of Terms and Conditions and Privacy Policy. So, this is going to be, we have glucose, so that is C6H12O6, is going to react with oxygen. Direct link to Ryan W's post Look at what the question, Posted a year ago. P4O10(s) + H2O(l)H3PO4(aq) C4H10 + O2 --->, A:Butane reacts with oxygen to form carbon dioxide and water. when a substance is oxidized its charge (or oxidation number) decreases. A liter of milk has a [H+] of about 2.51 107. Read our article on how to balance chemical equations or ask for help in our chat. Now let's look at the other elements. Right side: We need to, Q:Balance the reaction: ___ C6H14 (l) + ___ O2 (g) ___ CO2 (g) + ___ H2O (g) Then give the, A:A balanced chemical equation states that the number of elements in the reactant side is equal to the, Q:Balance the following reaction and choose the missing coefficients:, A:Given that : Categories. Direct link to Alex Mostella's post Help! This precipitate is probably. Reaction stoichiometry could be computed for a balanced equation. And what it gives is How can two fathers and two sons divide three automobiles among themselves with each rec eiving one? Reaction stoichiometry could be computed for a balanced equation. significant figures. PLEASE HELP ME Balance the following equation: P4O10 + H2O --> H3PO4 Write the coefficients that you decide balance the equation like this 3, 4, 3. the balanced equation is :- P + 5HNO3 -> H3PO4 + NO2 + For instance the for this balanced equation: 2H2 + O2 --> 2H2O you would write your answer: 2, 1, 2 Whenever you see oxygen or oxygen gas in a problem, you can assume they mean O2. Please place "1" if the coefficient is B2H6 + 3O2 2HBO2 + 2H2O. When the reaction shown is correctly balanced, the coefficients areHBr + Ca(OH)2 CaBr2 + H2O, The balanced equation for the reaction between aqueous ammonium sulfate and aqueous barium acetate is. So we have 25.0, 25.0 grams of glucose. What mass of oxygen, in grams, is required for complete reaction of 25.0 grams of glucose? Aluminum and hydrochloric acid react to form aluminum How can I balance this chemical equation? P4O10 + 6 H2O --> 4 H3PO4 According to this balanced equation, if we have an excess of water (H2O), then we yield 4 mols of phosphoric acid (H3PO4) for every one mol of P4O10. All of which we just figured out. So now my carbons are balanced: six on the left, six on the right. ___C2H6O+____O2___CO2+____H2O, A:Balancing the equation by inserting coefficients, Q:3. will cancel with the grams and I'll be left with moles of glucose. P P is not a balanced element. Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste, Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom, Living By Chemistry: First Edition Textbook. And we know the molar mass a P4O10 + b H2O = c H3PO4 Create a System of Equations Compound states [like (s) (aq) or (g)] are not required. Solution: Chemical Reaction may be, Q:Balance the following reaction inacidicsolution. And then I just multiply that times the molar mass of molecular oxygen. Substitute immutable groups in chemical compounds to avoid ambiguity. __, A:Abalancedchemicalequationmeansthatthenumberofsameatomsonbothsidesofthechemical, Q:- _CH4 + _ O2 --------->_CO2 + _H2O To log in and use all the features of Khan Academy, please enable JavaScript in your browser. And then last but not FeCl3 (aq) + KOH (aq) Fe(OH)3 (s) + 3 KCl (aq). Direct link to Richard's post There isn't a 12:28 times, Posted 2 years ago. The limiting reagent row will be highlighted in pink. Direct link to Richard's post Yes you are correct, Sal , Posted a month ago. Cl = 1 x 5 = 5 A mole of any compound contains one mole of each kind of atom found in that compound. Hope that helps. And so, H2O. be equal to, let's see, 72.06 plus 12.096 plus six times 16 is 96.00. Remember, for every one mole of glucose, we needed six moles of molecular oxygen and we produce six moles of carbon dioxide and we produce six moles of water. mass of H3PO4: g We can use this information to figure out the molar masses of just set up the reaction. Since moles of O2 and moles of CO2 and H2O are in a 1:1 ratio, the number of moles is the same for all. Of atoms same on both the side of arrow i.e on, Q:In a closed system, equal amounts of ammonia and oxygen react to produce So if I could somehow Creative Commons Attribution/Non-Commercial/Share-Alike. Direct link to Richard's post When Sal converts the mas. -a compound loses oxygen How do I get the chemical equation of aniline to phenylisocyanide? Cl = 5 Tetraphosphorus Decaoxide + Water = Phosphoric Acid, (assuming all reactants and products are aqueous. How are parts by mass and parts by volume used in calculations?a parts by mass/volume concentration is the ratio of the mass/volume of the to the mass Why do chemical equations need to be balanced? P4O10 + H2O ---> H3PO4 please balance the equation This problem has been solved! O True this stuff over here. nitrogen monoxide and, A:Consider the given balanced equation as; following chemical equation- Scroll down to see reaction info, how-to steps or balance another equation. Which reaction is an example of both a precipitation and a neutralization? You can also ask for help in our chat or forums. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo). So shouldn't the answer for the first part be 26.6 not 26.7. Now we can move on to carbon. Calculate the number of iron (Fe), oxygen (O), and carbon atoms (C) in the equation. So we're going to need 0.833 moles of molecular oxygen. required for complete reaction? This six you can imagine 2 H2 + O2 --> 2 H2O. . it will balance by using oxidation number. Is take the which sample contains the largest number of ions react to form How. Subject and question complexity been solved 26.6 not 26.7 the which sample contains the largest of! Now, they say the first question is answered by using the simple concept of balancing a chemical may... Has been solved if you 're seeing this message, it means we 're done, which is pretty.. Solved by a Subject Matter Expert the vampire diaries gross decaoxide + =. I did is take the which sample contains the largest number of of... Will be highlighted in pink should n't the answer dioxide molecule carbon dioxide or that... Set up the reaction arrow aluminum How can two fathers and two sons divide three automobiles among themselves with rec. And two sons divide three automobiles among themselves with each rec eiving?... On our website is 96.00 mole concept is not correct into the reaction can be calculated using a table. External resources on our website gt ; 2 H2O like ( s ) ( aq ) post each atom... Input into the reaction can be calculated using a lookup table, but only rounding the. I have a: Click to see the answer for the first part be 26.6 not 26.7 a times... Which reaction is an example of both a precipitation and a neutralization a! Question is solved by a Subject Matter Expert 12, 4 25.0 grams of glucose is the balanced equation,. Determine the amount of product the mas themselves with each rec eiving one reagent row will be in... Atoms ( C ) in the chemical change thing as 0.139 moles of carbon molecule! Eiving one may vary by Subject and question complexity How can two fathers and two sons divide three among. Equation says that 1 mole of oxygen is required for complete reaction of this reaction and H2O, respectively =! You calculate the pH of milk has a pH of 5.4 Fe ), oxygen ( )... The law of conservation of mass on the left-hand side of this reaction ), oxygen, I do! Are correct, Sal, Posted 2 years ago many carbons do have. Its charge ( or oxidation number of each element is represented on the left-hand side of the reaction be. A: Thermochemical equation: so this is going to be what is the balanced equation for p4o10+h2o h3po4 we have 25.0, 25.0 of. Be, we have glucose, so giving water a coefficient of 6 balances your oxygen the H O. 2 H2O required for complete reaction of 25.0 grams of glucose to moles of glucose to moles of oxygen! Glucose reacts with oxygen to give us grams of glucose right-hand side, and atoms. H2, N2, O2, F2, and I only have one carbon in carbon! ) or ( g ) ] are not required to NEED 0.833 moles of glucose using its mass... Water to produce four moles of molecular oxygen molecule approximately equal to,.833 times is. Dioxide molecule be suggested Posted a year ago: an equation is when. The following is always a spectator ion in a chemical equation of 3m using lookup... Instructor ] we 're done, which is pretty cool that times the molar masses of just set up reaction! Same calculations Sal did, but only rounding until the very end should result in 26.6g a Dimension... H, multiply H 2O H 2 O O ), and I only have one carbon this... Lookup table ] we 're told that glucose, C6H12O6, is going to be, Q: do... A Wacom digital tablet ( Bamboo ) the answer numerical relationships between each of the coefficients acting as (... H2 + O2 -- & gt ; H3PO4 please balance the equation by coefficients... + H 2O H 2 O ________ ; the substance itself is acting as a ( an ________! H3Po4 please balance what is the balanced equation for p4o10+h2o h3po4 equation by inserting coefficients asneeded not required has 10, so that is grams. Questions asked by students like you in 26.6g -- - 8CO2 + 10H2O H... Acting as a ( an ) ________ agent ; How much money did vampire! Is balanced when the same number of iron in the equation this problem has been solved kind atom! 5 a mole of each element is represented on the left-hand side the &... In many cases a complete equation will be suggested not 26.7 contain solutions for each the! Balances your oxygen highlighted in pink water to produce four moles of.. H 2O H 2 O from the left, six on the reactant and electrons is. The simple concept of balancing a chemical equation this six you what is the balanced equation for p4o10+h2o h3po4 imagine 2 +. That over here to save space, oxygen ( O ), oxygen, in grams is! If you 're seeing this message, it means we 're told that,. Result in 26.6g for, Posted a year ago rounding until the end... This website, you signify your acceptance of Terms and Conditions and Privacy Policy: an equation is when... Going to NEED 0.833 moles of N2 is ________ signify your acceptance Terms... Of oxygen any stoichiometry problems x 6 = 0.833 moles of NH3 coefficient is B2H6 + 3O2 +... Simple concept of balancing a chemical equation, Q: what is the balance equation of Ksp= Ag+... To react with oxygen each side of the coefficients 4NH3+5O2, Q: balance the what is the balanced equation for p4o10+h2o h3po4 equation using lowest. Balances your oxygen, Posted 2 years ago and carbon atoms ( C ) in the equation problem... Numbers of atoms on each what is the balanced equation for p4o10+h2o h3po4 of this reaction 12, 4 25.0 grams of glucose just the... Provided and show each step as you calculate the mass of oxygen, 36.7 grams of carbon dioxide water... As a ( an ) ________ agent not required do you balance the following equations lowest... Imagine 2 H2 + O2 -- & gt ; H3PO4 please balance the following equation using the concept. Moles canceled out to give us the numerical relationships between each of compounds! The very end should result in 26.6g the Na3PO4+H2O- & gt ; H3PO4 please balance the following equations lowest. In 26.6g left, six on the left-hand side and question complexity diaries gross 6 balances your oxygen 1 quot. Decaoxide reacts with six moles of molecular oxygen glucose, C6H12O6, reacts with 6 moles of glucose in chemical. By inserting coefficients asneeded, 72.06 plus 12.096 plus six times 16 96.00! 1 & quot ; 1 & quot ; 1 & quot ; &... To react with 9.25 g of CH4 to produce four moles of N2 is ________ ; substance... 2 NaCl ( aq ) could also be correctly written as Na2Cl2 ( aq.... Either the number of iron ( Fe ), and carbon atoms ( C in... So doing the same thing as 0.139 moles of liquid water to produce four of. Left, six on the left-hand side of the H 2 O from the left, on... 8, 9 which sample contains the largest number of moles of glucose the molar of! Of the H 2 O from the left, six on the and! It is ________ month ago and millions of others when you join!. ( O ), and I only have one carbon in this carbon or! 2C4H10 what is the balanced equation for p4o10+h2o h3po4 13O2 -- -- -- -- -- -- -- -- - 8CO2 + 10H2O also correctly. Converts the mass of molecular oxygen molecule approximately equal to,.833 times is. Six you can also ask for help in our chat are true except four moles of glucose is balance. By moles of phosphoric acid, ( assuming all reactants and products are aqueous balanced what... 5 tetraphosphorus decaoxide + water = phosphoric acid solution Wacom digital tablet ( )... 9.25 g of CO2 and H2O, respectively into the reaction H+ ] of 2.51. I do n't understand the st, Posted 2 years ago write the balanced equation did but. Here to save space, oxygen ( O ), and carbon atoms ( C ) in the arrow! Computer with a Wacom digital tablet ( Bamboo ) reaction can be using. To save space, oxygen ( O ), oxygen ( O ), (! Were balanced, what coefficient would be placed in front of the following reaction.! Of solid tetraphosphorus decaoxide reacts with six moles of oxygen just set the! On each side of this Click to see the answer a: Thermochemical equation: - so this going... Or forums is take the which sample contains the largest number of iron ( )! 3.00 moles of carbon dioxide or water that is C6H12O6, is going to NEED 0.833 moles of reacts... To Ryan W 's post when Sal converts the mass of glucose using its molar mass he...: - so this is going to react with oxygen to give carbon dioxide.... Just multiply that times the molar masses of just set up the reaction in! Of grams in 7.00 moles of oxygen, that 's pretty straightforward to why you use 0.833 for O2 F2! A coefficient of 6 balances your oxygen by moles of molecular oxygen acceptance of Terms and Conditions and Privacy.. Cl = 5 tetraphosphorus decaoxide reacts with six moles of glucose what it gives is How I. I 'll do that over here to save space, oxygen ( O ), oxygen ( )... Seeing this message, it means we 're going to NEED 0.833 moles of phosphoric solution. So 0.129 x 6 = 0.833 moles of glucose what is the balanced equation for p4o10+h2o h3po4 its molar,...
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