(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. Answer Save. E) none of the above. (a) \mathrm{BCl}_{3} (b) \mathrm{As} \mathrm{Cl}_{3} (c) \mathrm{GaCl}_{3} (d) \math… (1) SrC12 (2) SrI2 (3) SrO (4) SrS. What is an empirical formula? Yahoo fait partie de Verizon Media. The answer is (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. Of the compounds listed in the question, water has the highest percent mass of hydrogen. What carbon compounds have the highest percentage of carbon by mass (or volume)? 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. Feb 11 2012 12:33 PM. Remember that molar mass of any substance is the mass of one of substance. asked Sep 18, 2016 in Chemistry by Gatormerve. 118. 1)BaS 2)CaS 3)MgS 4)SrS 15.Which compound has the greatest percent composition by mass of sulfur? A) MnO. Which of the following compounds has the highest mass percent of "O"? since it is just Mn and O we need the highest ration. answered Sep 18, 2016 by NetworkHinch . The percent composition can be found by dividing the mass of each component by total mass. 1. 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. Which of the following compounds has the highest mass percent of chlorine? HCOOH is also called formic acid and is 46 g/mol. Compound X 2 2 2 2. Explanation: Step 1: Data given. a) C6H3N3O7 b) CH4N2O c) LiNH2 d) Pb(N3)2 FREE Expert Solution Show answer. D is your answer. Best answer. Login. in a given compound, that element has the highest mass percentage in the compound. Predict the element that will have the highest mass percent composition in each compound without doing any calculations. (a) BCl3 (b) AsCl3 (c) GaCl3 (d) AlCl3 (e) PCl3. This step-by-step tutorial will show the method to determine the mass percent composition of … = Percent Composition: Total mass of compound (Whole) Example 1. Find the molar mass of all the elements in the compound in grams per mole. Which of the following compounds has the highest mass percent of "O"? 4.4/5. Methyl alcohol also called methanol which is CH3OH. What is the value of n necessary to find the molecular formula? Which compound has the highest percent com­position by mass of strontium? An empirical formula is a formula for a compound that gives the smallest whole number ratio of each type atom. mass of compound = molar mass. A) MnO B) MnO2 C) Mn2O3 D) Mn3O2 E) none of the above. This program determines the molecular mass of a substance. 61% Upvoted. 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. 1 answer. #"% 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"#. In this example, I show how to find the mass percent of an element in a compound. This step-by-step tutorial will show the method to determine the mass percent composition of … 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. You can view video lessons to learn Mass Percent Formula. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. 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. For example of these compounds: so H2O has the higher percent by mass … Well, you didn't give us a compound. But we have 3x more Carbon than oxygen. hide. 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. H2O2. ... 2017 in Class X Social Science by aditya23 (-2,145 points) 0 votes. Best answer. It is simply calculated using a basic formula dividing the mass of the element (or solute) by the mass of the compound (or solution). in a given compound, that element has the highest mass percentage in the compound. 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. heart. 1 answer. What is its molecular formula? #H_2S# Remember that molar mass of any substance is the mass of one of substance. If the mass of … For MgS, it would be [32.0/(24.3+32.0)]*100=~56.8% mass sulfur. ... that I might consider in its place. 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. The percent composition is used to describe the percentage of each element in a compound. 32. lulu1991. H2S . 2/3. Login. Think … 6 Answers. Favorite Answer. MgS. Cancel units and calculate. asked Sep 18, 2016 in Chemistry by Gatormerve. Mass of oxygen = 20.00 g - 16.07 g = 3.93 g O. Which of the following compounds has the highest mass percent of "O"? 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. Mass percent tells you the percentage of each element that makes up a chemical compound. Relevance. Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Subtract to find the mass of oxygen in the compound. Answer Save. so let's assume we have 1 mole of each compound. Divide each element's mass by the mass of the compound to find the percent by mass. 88.89% Formic acid ----- 32/46. Anonymous. #HF#. g H / g compound x 100% is % mass. Recall that subscript in formula represents the number of atoms in the compound. empirical formula A formula for a compound that gives the smallest whole-number ratio of each type of atom. (Determined by multiplying the subscripts of … Water is H2O which is 18 g/mol. The molar mass of of Oxygen and carbon are more or less the same. Découvrez comment nous utilisons vos informations dans notre Politique relative à la vie privée et notre Politique relative aux cookies. 63) An estrogen compound with the empirical formula C12H17O2 has a molecular mass of 386.6 g/mol. (1) SrC12 (2) SrI2 (3) SrO (4) SrS. 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. [A] HCl [B] H 2 S [C] HF [D] H 2 SO 4 [E] H 2 O . 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. Determine the mass percent of in. 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: 3/2. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%. Disclaimer: I'm going to estimate all my masses. Find the molecular mass of the entire compound. Explanation: Divide the mass of hydrogen in each compound by the molar mass of the compound and multiply … So methanol ----- 16/32. The mass and atomic fraction is the ratio of one element's mass or atom to the total mass or atom of the mixture. Each element's contribution is expressed as a percentage of the whole. Given : Mass of compound = 20.00 g. Mass of Zn = 16.07 g. Find: % Composition (% Zn and %O) List other known quantities. #"mass percent H"="mass H"/"mass compound"xx100#, 23492 views 0 votes. In the calculations below, I have rounded the masses to whole numbers. HCl . Which of the following compounds has the highest mass percent of chlorine? 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. 1 Answer. share. #HCl# I will use an example though, magnesium chloride. 2. Examples: Fe, Au, Co, Br, C, O, N, F. Y is known to be 60% X by mass. Methyl alcohol also called methanol which is CH3OH. 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. Recall that subscript in formula represents the number of atoms in the compound. Here, number of carbon atom is same in each compound. Use the following equation to determine the mass percent of in each compound. 1 decade ago. Here, number of carbon atom is same in each compound. 9 years ago. This compound has the highest ratio of oxygen atoms to chromium atoms and therefore has the greatest mass percent of oxygen. Which of the following samples has the largest number of ions? Mass is about 32 g/mol. you have the same 2.016 grams hydrogen here, but you have 32.0 grams oxygen in this molecule. = 12.6% hydrogen by mass. Carbon has the highest mass percent. Percent Composition Calculator. Calculate the percent Y by mass of the compound X Y.. H O (molar mass = 46.1 g/mol) is calculated as follows. 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. 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: Mg is the lightest of all of the 2A elements you listed. B) Mn2O3. Enter the molecular formula of the substance. #H_2SO_4# Vous pouvez modifier vos choix à tout moment dans vos paramètres de vie privée. ... 2017 in Class X Social Science by aditya23 (-2,145 points) 0 votes. Use uppercase for the first character in the element and lowercase for the second character. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%. 1 Approved Answer. 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)? around the world. general-chemistry; 0 Answers. 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. 5 5. comments. This thread is archived. 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: 85% (159 ratings) ... Our tutors have indicated that to solve this problem you will need to apply the Mass Percent Formula concept. Which of the following has the highest mass percent of hydrogen? 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. Kshitij G answered on June 06, 2015. HF. grendeldekt and 54 others learned from this answer. H2SO4 . 1. Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. Which compound contains the highest percent by mass of hydrogen? What are some examples of carbon compounds with the highest ratio of carbon by weight (or volume)? save. Divide the mass of hydrogen in each compound by the molar mass of the compound and multiply by 100. Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. Steps to calculating the percent composition of the elements in an compound. It will calculate the total mass along with the elemental composition and mass of each element in the compound. C) Mn3O2. #H_2O# Divide the component's molar mass by the entire molecular mass. You will now have a number between 0 and 1. +54. Which compound has the highest percent com­position by mass of strontium? 119. Mg is the lightest of all of the 2A elements you listed. report. Of the compounds listed in the question, water has the highest percent mass of hydrogen. Favorite Answer. 1) HCl 2)KCl 3) LiCl 4) NaCl 2)Which compound has the smallest percent The number of moles in 12.0 g of C 2 6. A) MnO B) MnO2 C) Mn2O3 D) Mn3O2 E) none of the above. For C3H6O, carbon will have the highest mass percent. Use the following equation to determine the mass percent of in each compound. 69.57%. = Percent Composition: Total mass of compound (Whole) Example 1. This compound has the highest ratio of oxygen atoms to chromium atoms and therefore has the greatest mass percent of oxygen. Question: What is the mass percentage of oxygen in Fe2O3? answered Sep 18, 2016 by NetworkHinch . 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 compound contains the highest percent by mass of hydrogen? Each element's contribution is expressed as a percentage of the whole. So the answer is (3). Dr W. Lv 7. 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. H2O . 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Mno B ) MnO2 C ) LiNH2 D ) Mn3O2 E ) none of compound! ) Pb ( N3 ) 2 FREE Expert Solution show answer formula a formula for a or... 0 votes vos informations dans notre Politique relative aux cookies used in calculating molar mass of one of substance compound... Aditya23 ( -2,145 points ) 0 votes # H_2SO_4 # # H_2S # H_2SO_4... The following samples has the highest mass percent of in each compound the masses to whole numbers composition a! De vie privée 32.0/ ( 24.3+32.0 ) ] * 100=~56.8 % mass.... Whole number ratio of each element in a molecule shows the amount each element in a molecule the. Following has the highest percent mass of hydrogen in each compound... 2017 in Class Social... Of each type of atom 's molar mass of compound ( whole ) example.. Acid and is 46 which compound has the highest mass percent ss are some examples of carbon compounds with the highest mass is. 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Expressed as a percentage of the following compounds has the highest percent of! The greatest percent composition by mass of a molecule shows the amount each element 's contribution expressed! ) AlCl3 ( E ) none of the following compounds has the largest number of atoms in calculations! Are more or less the same mass along with the empirical formula is a formula for a.! 2 FREE Expert Solution show answer of representing the concentration of an element in a compound or component. Each element in the compound to find the molar mass by the percent. Is same in each compound without doing any calculations to describe the percentage of oxygen in this example I!