Think … Calculate the percent by weight of sodium (Na) and chlorine (Cl) in sodium chloride (NaCl) Calculate the molecular mass (MM): MM = 22.99 + 35.45 = 58.44 ; Calculate the total mass of Na present: in a given compound, that element has the highest mass percentage in the compound. #HF#. Well, you didn't give us a compound. You can view video lessons to learn Mass Percent Formula. It will calculate the total mass along with the elemental composition and mass of each element in the compound. You will now have a number between 0 and 1. Best answer. 1 decade ago. Login. Since there is only one Sr in every compound, the mass will be the same: 87.62g/mol Sr Now divide the molar mass of Sr by each of compounds' masses: 32. lulu1991. Determine the mass percent of in. 1. 0 votes. ... 2017 in Class X Social Science by aditya23 (-2,145 points) 0 votes. 69.57%. Best answer. Divide the mass of hydrogen in each compound by the molar mass of the compound and multiply by 100. The mass and atomic fraction is the ratio of one element's mass or atom to the total mass or atom of the mixture. Which of the following compounds has the highest mass percent of "O"? Anonymous. To find the percent composition (by mass) for each element in a compound we need to determine the molar mass for each element and for the entire compound. Each element's contribution is expressed as a percentage of the whole. PLEASE DO NOT WRITE IN THE PAPER 1) 14.6% 2)29.2% 3) 58.4% 4) 87.5% 1)What is the percent composition by mass of nitrogen in (NH4)2CO3 (gram-formula mass = 96.0 g/mol)? B) Mn2O3. Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. Relevance. This compound has the highest ratio of oxygen atoms to chromium atoms and therefore has the greatest mass percent of oxygen. One degree Brix is 1 gram of sucrose in 100 grams of solution and represents the strength of the solution as percentage by mass.If the solution contains dissolved solids other than pure sucrose, then the °Bx only approximates the dissolved solid content. For C3H6O, carbon will have the highest mass percent. Steps to calculating the percent composition of the elements in an compound. Find the molecular mass of the entire compound. H2SO4 . ... 2017 in Class X Social Science by aditya23 (-2,145 points) 0 votes. Y is known to be 60% X by mass. grendeldekt and 54 others learned from this answer. #H_2SO_4# 2.016/32.0 X 100 = 6.3%. Finding the mass percent requires the molar mass of the elements in the compound in grams/mole or the number of grams used to make a solution. (a) 1.0 g of BeCl2 (b) 1.0 g of MgCl2 (c) 1.0 g of CaS (d) 1.0 g of SrCO3 (e) 1.0 g of BaSO4. HCl . Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. The number of Sr is the same so if the compound has the smallest gram formula mass, it has the highest percent composition by mass of strontium. answered Sep 18, 2016 by NetworkHinch . What is its molecular formula? around the world. H2O . What is an empirical formula? Découvrez comment nous utilisons vos informations dans notre Politique relative à la vie privée et notre Politique relative aux cookies. Pour autoriser Verizon Media et nos partenaires à traiter vos données personnelles, sélectionnez 'J'accepte' ou 'Gérer les paramètres' pour obtenir plus d’informations et pour gérer vos choix. (a) BCl3 (b) AsCl3 (c) GaCl3 (d) AlCl3 (e) PCl3. (1) SrC12 (2) SrI2 (3) SrO (4) SrS. What are some examples of carbon compounds with the highest ratio of carbon by weight (or volume)? Remember that molar mass of any substance is the mass of one of substance. 3. You're looking at a percentage of oxygen by weight so you need (weight of oxygen)/(weight of compound) x 100% One oxygen is about 16 g/mol. Find the molar mass of all the elements in the compound in grams per mole. D is your answer. Which of the following has the highest mass percent of hydrogen? Login. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%. so let's assume we have 1 mole of each compound. (a) \mathrm{BCl}_{3} (b) \mathrm{As} \mathrm{Cl}_{3} (c) \mathrm{GaCl}_{3} (d) \math… Of the compounds listed in the question, water has the highest percent mass of hydrogen. 1 answer. Mg is the lightest of all of the 2A elements you listed. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%. Compound X 2 2 2 2. Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Methyl alcohol also called methanol which is CH3OH. What carbon compounds have the highest percentage of carbon by mass (or volume)? The number of Sr is the same so if the compound has the smallest gram formula mass, it has the highest percent composition by mass of strontium. Calculate the percent by weight of sodium (Na) and chlorine (Cl) in sodium chloride (NaCl) Calculate the molecular mass (MM): MM = 22.99 + 35.45 = 58.44 ; Calculate the total mass of Na present: If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. Which compound has the highest percent com­position by mass of strontium? The number of moles in 12.0 g of C 2 6. Yahoo fait partie de Verizon Media. heart. ... that I might consider in its place. Explanation: Divide the mass of hydrogen in each compound by the molar mass of the compound and multiply … mass of compound = molar mass. D) MnO2. empirical formula A formula for a compound that gives the smallest whole-number ratio of each type of atom. HCOOH is also called formic acid and is 46 g/mol. 2/3. Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. 9 years ago. #HCl# Divide each element's mass by the mass of the compound to find the percent by mass. Answer Save. Which of the following compounds has the highest mass percent of "O"? A) MnO B) MnO2 C) Mn2O3 D) Mn3O2 E) none of the above. An empirical formula is a formula for a compound that gives the smallest whole number ratio of each type atom. 118. (Determined by multiplying the subscripts of … It is simply calculated using a basic formula dividing the mass of the element (or solute) by the mass of the compound (or solution). [A] HCl [B] H 2 S [C] HF [D] H 2 SO 4 [E] H 2 O . In the case of carbon monoxide the ratio of the mass of carbon and oxygen present is 12:16 and in the case of carbon dioxide it is 12:32. The answer is (3). Methyl alcohol also called methanol which is CH3OH. A) MnO B) MnO2 C) Mn2O3 D) Mn3O2 E) none of the above. Kshitij G answered on June 06, 2015. For MgS, it would be [32.0/(24.3+32.0)]*100=~56.8% mass sulfur. Calculate the percent Y by mass of the compound X Y.. H O (molar mass = 46.1 g/mol) is calculated as follows. so H2O has the higher percent by mass … In the calculations below, I have rounded the masses to whole numbers. you have the same 2.016 grams hydrogen here, but you have 32.0 grams oxygen in this molecule. asked Sep 18, 2016 in Chemistry by Gatormerve. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100. 1 answer. 1 Approved Answer. Nos partenaires et nous-mêmes stockerons et/ou utiliserons des informations concernant votre appareil, par l’intermédiaire de cookies et de technologies similaires, afin d’afficher des annonces et des contenus personnalisés, de mesurer les audiences et les contenus, d’obtenir des informations sur les audiences et à des fins de développement de produit. share. #H_2O# For example of these compounds: Problem: Which of these compounds contains the greatest percentage of nitrogen? HF. = 12.6% hydrogen by mass. This step-by-step tutorial will show the method to determine the mass percent composition of … Disclaimer: I'm going to estimate all my masses. This step-by-step tutorial will show the method to determine the mass percent composition of … 119. Which compound has the highest percent com­position by mass of strontium? A) MnO. So the answer is (3). 88.89% Formic acid ----- 32/46. But we have 3x more Carbon than oxygen. #H_2S# Cancel units and calculate. First find the molar masses of all of the compounds: SrCl2 = 158.53g/mol SrI2 = 341.43g/mol SrO = 103.62g/mol SrS = 119.68g/mo Then find the molar mass of Sr in each of the compounds. Use the following equation to determine the mass percent of in each compound. (1) SrC12 (2) SrI2 (3) SrO (4) SrS. general-chemistry; 0 Answers. 2. In MgS, it is ~57% mass S. In BaS, the heaviest 2A element you listed, it is ~19% S. The way to determine this is by dividing the molar mass of sulfur by the molar mass of the compound and multiplying by 100. a) C6H3N3O7 b) CH4N2O c) LiNH2 d) Pb(N3)2 FREE Expert Solution Show answer. a) CO. For the given compound both elements are present in 1:1 ratio so the element which has higher atomic weight has the higher mass % composition, So O has higher mass % composition for the given compound. save. Mass is about 32 g/mol. Subtract to find the mass of oxygen in the compound. Which compound contains the highest percent by mass of hydrogen? 61% Upvoted. since it is just Mn and O we need the highest ration. This thread is archived. So that compounds the question from the start. C) Mn3O2. Carbon has the highest mass percent. Here, number of carbon atom is same in each compound. #"% composition of element"=("MM of element")/("MM of compound")xx100# The molar mass of ammonium carbonate #("(NH"_4")"_2"CO"_3")# is #"96.086 g/mol"#. Which of the following compounds has the highest mass percent of chlorine? Question: What is the mass percentage of oxygen in Fe2O3? Recall that subscript in formula represents the number of atoms in the compound. What is the value of n necessary to find the molecular formula? Informations sur votre appareil et sur votre connexion Internet, y compris votre adresse IP, Navigation et recherche lors de l’utilisation des sites Web et applications Verizon Media. Also, the numerators are the mass of hydrogen in the compound in grams, and the denominators are the molar masses of the compounds in grams. SOLUTION: By calculating for the mass percent of oxygen in each of the choices, we find that choice c. {eq}Mg(NO_3)_2 {/eq} has the highest mass percent of oxygen. Here, number of carbon atom is same in each compound. Which of the following compounds has the highest mass percent of "O"? In this example, I show how to find the mass percent of an element in a compound. So methanol ----- 16/32. 1. Predict the element that will have the highest mass percent composition in each compound without doing any calculations. #"mass percent H"="mass H"/"mass compound"xx100#, 23492 views report. Percent Composition Calculator. In MgS, it is ~57% mass S. In BaS, the heaviest 2A element you listed, it is ~19% S. The way to determine this is by dividing the molar mass of sulfur by the molar mass of the compound and multiplying by 100. Which of the following samples has the largest number of ions? hide. 85% (159 ratings) ... Our tutors have indicated that to solve this problem you will need to apply the Mass Percent Formula concept. MgS. Which of the following compounds has the highest mass percent of chlorine? I will use an example though, magnesium chloride. a) CO. For the given compound both elements are present in 1:1 ratio so the element which has higher atomic weight has the higher mass % composition, So O has higher mass % composition for the given compound. The percent composition can be found by dividing the mass of each component by total mass. Degrees Brix (symbol °Bx) is the sugar content of an aqueous solution. 1 Answer. Use the following equation to determine the mass percent of in each compound. H2O2. Remember that molar mass of any substance is the mass of one of substance. Mass of oxygen = 20.00 g - 16.07 g = 3.93 g O. This compound has the highest ratio of oxygen atoms to chromium atoms and therefore has the greatest mass percent of oxygen. This program determines the molecular mass of a substance. Recall that subscript in formula represents the number of atoms in the compound. asked Sep 18, 2016 in Chemistry by Gatormerve. Divide the component's molar mass by the entire molecular mass. 3/2. 5 5. comments. Use uppercase for the first character in the element and lowercase for the second character. Mg is the lightest of all of the 2A elements you listed. The percent composition is used to describe the percentage of each element in a compound. +54. 0 votes. 4.4/5. in a given compound, that element has the highest mass percentage in the compound. Feb 11 2012 12:33 PM. Given : Mass of compound = 20.00 g. Mass of Zn = 16.07 g. Find: % Composition (% Zn and %O) List other known quantities. Enter the molecular formula of the substance. Vous pouvez modifier vos choix à tout moment dans vos paramètres de vie privée. E) none of the above. Explanation: Step 1: Data given. Dr W. Lv 7. If the mass of … H2S . 63) An estrogen compound with the empirical formula C12H17O2 has a molecular mass of 386.6 g/mol. = Percent Composition: Total mass of compound (Whole) Example 1. Favorite Answer. 1) HCl 2)KCl 3) LiCl 4) NaCl 2)Which compound has the smallest percent 13.If the empirical formula for an organic compound is CH2O, then the molecular mass of the compound could be 1)CH2 2)C2H4 3)C3H6 4)C4H8 14.A compound has an empirical formula of CH2 and a molecular mass of 56. Determine the mass percent of in. Examples: Fe, Au, Co, Br, C, O, N, F. Of the compounds listed in the question, water has the highest percent mass of hydrogen. The number of Sr is the same so if the compound has the smallest gram formula mass, it has the highest percent composition by mass of strontium. Answer Save. Water is H2O which is 18 g/mol. So 50% Water ----- 16/18. Relevance. 1)BaS 2)CaS 3)MgS 4)SrS 15.Which compound has the greatest percent composition by mass of sulfur? In order to determine percent composition of the elements in a compound, the molar mass (MM) of each element is divided by the MM of the compound and multiplied by 100. g H / g compound x 100% is % mass. The molar mass of of Oxygen and carbon are more or less the same. Each element's contribution is expressed as a percentage of the whole. Which compound contains the highest percent by mass of hydrogen? Favorite Answer. = Percent Composition: Total mass of compound (Whole) Example 1. answered Sep 18, 2016 by NetworkHinch . 6 Answers. general-chemistry; 0 Answers. Mass percent tells you the percentage of each element that makes up a chemical compound. Oxygen and carbon are more or less the same the elements in the compound is used to describe the of... As a percentage of each component by total mass of any substance the. 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Same in each compound... 2017 in Class X Social Science by aditya23 ( points. Also called formic acid and is 46 g/mol the number of ions g = 3.93 g O component in given. To calculating the percent composition of the compound Class X Social Science aditya23. A formula for a compound which compound has the highest mass percent ss the elements in an compound in grams mole... None of the compounds listed in the question, water has the higher percent by mass of oxygen Fe2O3... Element and lowercase for the second character the above it is just Mn and O we need the highest percentage. Is used to describe the percentage of nitrogen to determine the mass of hydrogen in each compound ) E. Formula for a compound or a component divided by the entire molecular mass of molecule! Calculating the percent composition of a component divided by the molar mass by the total mass of a molecule to! Pb ( N3 ) 2 FREE Expert Solution show answer B ) MnO2 )... What is the molecular formula that makes up a chemical compound sugar content of an element in a compound gives. That gives the smallest whole-number ratio of each element in the compound ( N3 ) 2 Expert... Xx100 #, 23492 views around the world less the same 2.016 grams hydrogen here but... Computed is the lightest of all of the compounds listed in the.... Paramètres de vie privée in calculating molar mass of each compound an element in a molecule contributes to total! Composition of a component in a compound also called formic acid and is 46 g/mol method to determine mass! Some examples of carbon atom is same in each compound some examples of atom!, water has the highest mass percent of in each compound Mn3O2 E ) none of the samples. And multiply by 100 % is % mass sulfur by weight ( or volume ) you can view lessons! Sep 18, 2016 in Chemistry by Gatormerve element 's contribution is expressed as a percentage of each of! Component in a given compound, that element has the highest mass percent formula which compound has the highest mass percent ss ( D ) Pb N3... Mass compound '' xx100 #, 23492 views around the world vos informations dans notre Politique relative à vie...