(a) BCl3 (b) AsCl3 (c) GaCl3 (d) AlCl3 (e) PCl3. Calculate the percent Y by mass of the compound X Y.. H O (molar mass = 46.1 g/mol) is calculated as follows. E) none of the above. Relevance. D is your answer. So methanol ----- 16/32. This step-by-step tutorial will show the method to determine the mass percent composition of … You can view video lessons to learn Mass Percent Formula. heart. Answer Save. 3. Methyl alcohol also called methanol which is CH3OH. 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. The answer is (3). Découvrez comment nous utilisons vos informations dans notre Politique relative à la vie privée et notre Politique relative aux cookies. #HCl# 1 answer. 1) HCl 2)KCl 3) LiCl 4) NaCl 2)Which compound has the smallest percent grendeldekt and 54 others learned from this answer. Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. Remember that molar mass of any substance is the mass of one of substance. Recall that subscript in formula represents the number of atoms in the compound. = 12.6% hydrogen by mass. Of the compounds listed in the question, water has the highest percent mass of hydrogen. 0 votes. share. g H / g compound x 100% is % mass. 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. You will now have a number between 0 and 1. Which of the following has the highest mass percent of hydrogen? The percent composition can be found by dividing the mass of each component by total mass. 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. Subtract to find the mass of oxygen in the compound. For MgS, it would be [32.0/(24.3+32.0)]*100=~56.8% mass sulfur. ... 2017 in Class X Social Science by aditya23 (-2,145 points) 0 votes. 1)BaS 2)CaS 3)MgS 4)SrS 15.Which compound has the greatest percent composition by mass of sulfur? But we have 3x more Carbon than oxygen. Favorite Answer. Find the molecular mass of the entire compound. 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. So 50% Water ----- 16/18. Y is known to be 60% X by mass. H2O . Each element's contribution is expressed as a percentage of the whole. What is its molecular formula? Cancel units and calculate. Recall that subscript in formula represents the number of atoms in the compound. 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. ... 2017 in Class X Social Science by aditya23 (-2,145 points) 0 votes. What are some examples of carbon compounds with the highest ratio of carbon by weight (or volume)? Divide each element's mass by the mass of the compound to find the percent by mass. Question: What is the mass percentage of oxygen in Fe2O3? Mass percent tells you the percentage of each element that makes up a chemical compound. So that compounds the question from the start. The percent composition is used to describe the percentage of each element in a compound. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. It is simply calculated using a basic formula dividing the mass of the element (or solute) by the mass of the compound (or solution). 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. so H2O has the higher percent by mass … Problem: Which of these compounds contains the greatest percentage of nitrogen? Percent Composition Calculator. Predict the element that will have the highest mass percent composition in each compound without doing any calculations. This program determines the molecular mass of a substance. This compound has the highest ratio of oxygen atoms to chromium atoms and therefore has the greatest mass percent of oxygen. 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. in a given compound, that element has the highest mass percentage in the compound. asked Sep 18, 2016 in Chemistry by Gatormerve. Dr W. Lv 7. Relevance. 9 years ago. 1 decade ago. 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. (1) SrC12 (2) SrI2 (3) SrO (4) SrS. 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. A) MnO B) MnO2 C) Mn2O3 D) Mn3O2 E) none of the above. Steps to calculating the percent composition of the elements in an compound. Use the following equation to determine the mass percent of in each compound. This step-by-step tutorial will show the method to determine the mass percent composition of … Which of the following compounds has the highest mass percent of "O"? Which compound has the highest percent com­position by mass of strontium? H2O2. In the calculations below, I have rounded the masses to whole numbers. Determine the mass percent of in. Login. = Percent Composition: Total mass of compound (Whole) Example 1. Mg is the lightest of all of the 2A elements you listed. Each element's contribution is expressed as a percentage of the whole. general-chemistry; 0 Answers. Favorite Answer. Best answer. A) MnO B) MnO2 C) Mn2O3 D) Mn3O2 E) none of the above. 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. you have the same 2.016 grams hydrogen here, but you have 32.0 grams oxygen in this molecule. HF. 119. 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: 6 Answers. 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. Of the compounds listed in the question, water has the highest percent mass of hydrogen. Feb 11 2012 12:33 PM. 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) SrC12 (2) SrI2 (3) SrO (4) SrS. If the mass of … Use the following equation to determine the mass percent of in each compound. Which compound contains the highest percent by mass of hydrogen? H2S . 32. lulu1991. 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. 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. An empirical formula is a formula for a compound that gives the smallest whole number ratio of each type atom. Anonymous. Here, number of carbon atom is same in each compound. Kshitij G answered on June 06, 2015. For example of these compounds: Water is H2O which is 18 g/mol. Best answer. Here, number of carbon atom is same in each compound. It will calculate the total mass along with the elemental composition and mass of each element in the compound. This compound has the highest ratio of oxygen atoms to chromium atoms and therefore has the greatest mass percent of oxygen. asked Sep 18, 2016 in Chemistry by Gatormerve. Determine the mass percent of in. 1. Which of the following compounds has the highest mass percent of chlorine? D) MnO2. Explanation: Divide the mass of hydrogen in each compound by the molar mass of the compound and multiply … Compound X 2 2 2 2. #HF#. in a given compound, that element has the highest mass percentage in the compound. Explanation: Step 1: Data given. hide. C) Mn3O2. 1. #H_2S# MgS. Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. Which of the following compounds has the highest mass percent of chlorine? In this example, I show how to find the mass percent of an element in a compound. I will use an example though, magnesium chloride. Methyl alcohol also called methanol which is CH3OH. Disclaimer: I'm going to estimate all my masses. What is the value of n necessary to find the molecular formula? 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. Find the molar mass of all the elements in the compound in grams per mole. Think … #H_2O# A) MnO. 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. so let's assume we have 1 mole of each compound. 5 5. comments. #"% 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"#. Well, you didn't give us a compound. [A] HCl [B] H 2 S [C] HF [D] H 2 SO 4 [E] H 2 O . H2SO4 . Carbon has the highest mass percent. Yahoo fait partie de Verizon Media. Which of the following samples has the largest number of ions? Given : Mass of compound = 20.00 g. Mass of Zn = 16.07 g. Find: % Composition (% Zn and %O) List other known quantities. +54. 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. = Percent Composition: Total mass of compound (Whole) Example 1. HCl . Remember that molar mass of any substance is the mass of one of substance. 3/2. answered Sep 18, 2016 by NetworkHinch . #H_2SO_4# 69.57%. Which compound contains the highest percent by mass of hydrogen? general-chemistry; 0 Answers. The mass and atomic fraction is the ratio of one element's mass or atom to the total mass or atom of the mixture. 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. 118. save. (Determined by multiplying the subscripts of … 2. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%. 63) An estrogen compound with the empirical formula C12H17O2 has a molecular mass of 386.6 g/mol. Login. Mg is the lightest of all of the 2A elements you listed. Which of the following compounds has the highest mass percent of "O"? Mass is about 32 g/mol. 0 votes. 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. Which of the following compounds has the highest mass percent of "O"? 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)? 88.89% Formic acid ----- 32/46. 85% (159 ratings) ... Our tutors have indicated that to solve this problem you will need to apply the Mass Percent Formula concept. (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. 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: a) C6H3N3O7 b) CH4N2O c) LiNH2 d) Pb(N3)2 FREE Expert Solution Show answer. Answer Save. This thread is archived. The number of moles in 12.0 g of C 2 6. What carbon compounds have the highest percentage of carbon by mass (or volume)? 1 Approved Answer. 4.4/5. #"mass percent H"="mass H"/"mass compound"xx100#, 23492 views B) Mn2O3. Divide the mass of hydrogen in each compound by the molar mass of the compound and multiply by 100. ... that I might consider in its place. For C3H6O, carbon will have the highest mass percent. Divide the component's molar mass by the entire molecular mass. What is an empirical formula? Vous pouvez modifier vos choix à tout moment dans vos paramètres de vie privée. Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. 2.016/32.0 X 100 = 6.3%. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%. Examples: Fe, Au, Co, Br, C, O, N, F. 1 Answer. (a) \mathrm{BCl}_{3} (b) \mathrm{As} \mathrm{Cl}_{3} (c) \mathrm{GaCl}_{3} (d) \math… HCOOH is also called formic acid and is 46 g/mol. 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 has the highest percent com­position by mass of strontium? around the world. 61% Upvoted. 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 percentage is one way of representing the concentration of an element in a compound or a component in a mixture. So the answer is (3). mass of compound = molar mass. Mass of oxygen = 20.00 g - 16.07 g = 3.93 g O. since it is just Mn and O we need the highest ration. 2/3. answered Sep 18, 2016 by NetworkHinch . report. The molar mass of of Oxygen and carbon are more or less the same. Use uppercase for the first character in the element and lowercase for the second character. Degrees Brix (symbol °Bx) is the sugar content of an aqueous solution. 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: empirical formula A formula for a compound that gives the smallest whole-number ratio of each type of atom. Enter the molecular formula of the substance. 1 answer.