you must convert percent by Mass to relative numbers of atoms suppose you are given the percent by mass of the elements in a compound and you wish to determine the empirical formula. The key to performing the calculation correctly is to note there are 2 atoms of hydrogen in each water molecule. b.CH c.CH d. C,H, Group of answer choices HCl H2O H2SO4 H3PO4 HF Solution for A certain compound contains only carbon, hydrogen and oxygen. - Definition & Effects, NY Regents Exam - Chemistry: Tutoring Solution, NY Regents Exam - Earth Science: Help and Review, NY Regents Exam - Earth Science: Tutoring Solution, NY Regents Exam - Living Environment: Help and Review, NY Regents Exam - Living Environment: Tutoring Solution, NY Regents Exam - Physics: Help and Review, NY Regents Exam - Physics: Tutoring Solution, Accuplacer ESL Language Use Test: Practice & Study Guide, Holt Science Spectrum - Physical Science with Earth and Space Science: Online Textbook Help, NC EOC Assessment - Math I: Test Prep & Practice, GED Math: Quantitative, Arithmetic & Algebraic Problem Solving, GED Social Studies: Civics & Government, US History, Economics, Geography & World, EPT: CSU English Language Arts Placement Exam, Biological and Biomedical 1 Which compound contains the highest percent by mass of hydrogen? Next, you use the mass percentage formula. Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*. Molar mass of HF is 20.0g/mol and there is 1 hydrogen atom: {eq}\% mass=\frac{1\cdot \:1.0g/mol}{20.0g/mol}\cdot 100\%=5.00\% Mass of oxygen = 20.00 g - 16.07 g = 3.93 g O. 1 Answer to Which compound contains the highest percent by mass of hydrogen? = 12.6% hydrogen by mass. Its molar mass ts 98.96 g. What re its empirical and molecular formulas The molar mass of hydrogen is 1.0g/mol. Step 1: H20 ? This compound is 4.20% by mass of hydrogen. - Definition & Differences, Working Scholars® Bringing Tuition-Free College to the Community. Mass percent composition is also known percent by weight. Volume is conserved in chemical change. Explanation: Divide the mass of hydrogen in each compound by the â¦ Compound X contains 15.0 grams hydrogen and 120.0 grams oxygen. Which compound contains the highest percent by mass of hydrogen A HCl B H 2 O C from CHEMISTRY CHEM 16 at University of the Philippines Diliman At constant temperature and moles, pressure of gas is inversely proportional to its vol... Q: Which substance is the oxidizing agent in the reaction below?Fe2+Â + H+Â + Cr2O7Â 2-Â ââÂ Fe3+Â + Cr3+Â + H... A: Redox reactions combine reduction as well as oxidation reactions. {/eq}. Services, What are Atoms & Molecules? {/eq}. For water, the percent by mass of hydrogen is 1 8 2 × 1 0 0 = 1 1 . Median response time is 34 minutes and may be longer for new subjects. {/eq}. A. HCl B. H 2 O C. H 2 SO 4 D. H 2 S E. HF 29. If 42 mg of the compound contains 3,01 x 1020 molecules, the molecular formula of the compound will be: (2017-Gujarat) a. C.H. Hint: Choose one or more answers. 1 1 %. We will calculate the percent mass of hydrogen in each of the molecules: Molar mass of HCl is 36.5g/mol and there is 1 hydrogen atom: {eq}\% mass=\frac{1\cdot \:1.0g/mol}{36.5g/mol}\cdot 100\%=2.74\% A compound has a molar mass of 100 g/mol and the percent composition (by mass) of 65.45% C, 5.45% H, and 29.09% O. Note that you have to account for the number of equivalents of that atom in that compound, not just its molar mass. Match the following: 1. Our experts can answer your tough homework and study questions. Click hereðto get an answer to your question ï¸ A compound contains 4.07% hydrogen, 24.27% carbon and 71.65% chlorine. {/eq}. Fat is a very effective source of energy for the body . A. How many grams of hydrogen are there in a 121-g sample of this substance? Provides Energy Group of answer choices HCl H2O H2SO4 H3PO4 HF. © copyright 2003-2020 Study.com. Cancel units and calculate. [A] HCl [B] H 2 S [C] HF [D] H 2 SO 4 [E] H 2 O Â Â Â Â Â Â Â Â Â Â  Mass of sodium phosphate (Na3PO4) = 1.223 g Molar mass of HF is 20.0g/mol and there is 1 hydrogen atom: {eq}\% mass=\frac{1\cdot \:1.0g/mol}{20.0g/mol}\cdot 100\%=5.00\% {/eq} Of these compounds, water contains the highest % â¦ A. C12H24O2 B. C6HO C. C18H3O4 D. C6H12O In Which Compound Is The Percent Composition By Mass Of Nitrogen The Highest? Fill in the chart below by writing formulas for... Ozone, O3, is a molecule. Of the compounds listed in the question, water has the highest percent mass of hydrogen. Mass percent composition describes the relative quantities of elements in a chemical compound. This step-by-step tutorial will show the method to determine the mass percent â¦ The total mass of the compound is the sum of the mass of the two hydrogen atoms and one oxygen atom. It is calculated by dviding the number of atoms of the element in the molecule by the molar mass of the element and dividing by the molar mass of the molecule and multiplying by 100 percent. Which compound contains the highest percent by mass of hydrogen. 606 g C. 12.2 g D. 5.05 g E. 24.0 g 30. For a solution, mass percent equals the mass of an element in one mole of the compound divided by the molar mass of the compound, multiplied by 100%. Divide each element's mass by the mass of the compound to find the percent by mass. It is known to contain 40.9% C and 4.58% H by mass. Molar mass of sulfuric acid is 98.0g/mol and there are 2 hydrogen atoms: {eq}\% mass=\frac{2\cdot \:1.0g/mol}{98.0g/mol}\cdot 100\%=2.04\% a. Each element's contribution is expressed as a percentage of the whole. it provides twice as much... Q: Consider the reaction: which of the following is true. The percent composition is used to describe the percentage of each element in a compound. A hydrocarbon is found to be 85.6 carbon by mass what is the empirical formula for this compound. CH2. Sciences, Culinary Arts and Personal Molar mass of water is 18.0g/mol and there are 2 hydrogen atom: {eq}\% mass=\frac{2\cdot \:1.0g/mol}{18.0g/mol}\cdot 100\%=11.1\% {/eq}. Â Â Â Â Â Â Â Â Â Â ... Q: Why should curd and sour substance not be kept in brass and copper vessels. The process where any species tend... Q: What is the molar concentration of sodium ion in a 200 mL solution prepared from 1.223 g of sodium p... A: Given, volume of solution = 200 mL All rights reserved. The percent mass of a particular element in a molecule represents the portion of the total mass of the molecule that is attributed to that particular element. A chloride of rhenium contains 63.6 rhenium what is the formula of this compound. A hydrocarbon (a compound consisting solely of carbon and hydrogen) is found to be 85.6% carbon by mass. Explain how to use percent by mass â¦ Q: A graduate student was following a procedure to make 3-propylcyclohexa-1,4-diene. Click hereðto get an answer to your question ï¸ A 78.0 g sample of an unknown compound contains 12.4 g of hydrogen. you have the same 2.016 grams hydrogen here, but you have 32.0 grams oxygen in this molecule. 54. a) KCl b) BaCl 2 c) SiCl 4 d) LiCl 130) One of the compounds that give garlic its characteristic odour is ajoene. If the complete combustion of thisâ¦ Chlorous acid hclo2 contains what percent hydrogen by mass. Which compound contains the highest percent by mass of hydrogen? Compound Y contains 2.0 grams of hydrogen and 32.0 grams of oxygen. Which compound contains the highest percent by mass of hydrogen A HCl B H 2 O C from CHEMISTRY 100 at University of Toronto HCl. Balanced chemical equations imply which of the following? H 2 O. H 2 S. H 2 SO 4. Percent Composition Calculator. The formula mass contains one mole of Mg (24.3 gmol^-1) and two moles each of O (16 gmol^-1) and hydrogen H (1 gmol^-1). H20. 2.016/32.0 X 100 = 6.3%. Carbon atom, which contains four different types of atoms or groups as substitutions ... Q: A sample of a gas at room temperature occupies a volume of 12.0 L at a pressure of 672 torr. Sodium chloride, NaCl 2.... 1. What is the percent by mass of hydrogen in the compound? 7 4 %. So, in 1 mole of water there are 2 x 1.008 grams of hydrogen. The answer is A Hide the Oxygen for a minute Mass of elements: Be:9.012 Mg:24.305 Ca:40.078 Sr:87.62 Out of all these choices, Be is the lightest Solution for Which compound contains the highest percent by mass of hydrogen? 6. 6.11 g B. A: 1. 28. A substance contains 35.0 g nitrogen, 5.05 g hydrogen, and 60.0 g of oxygen. e) Fe(NO 3) 3 f) ICl 3 129) Which of the following chlorides has the highest and which has the lowest percentage of chlorine, by mass, in its formula? Subtract to find the mass of oxygen in the compound. Click hereðto get an answer to your question ï¸ 1. Which compound contains the highest percent by mass of hydrogen? During the workup ... A: SOLUTION: 2 HBr(g) H2(8) + Br2(8) The empirical formula of the compound is: A. [d] CH4 ---> 4 (1)/ [1 (12)+4 (1)] = 25% [e] C3H6 ---> 6 (1)/ [3 (12)+6 (1)] = 14.3% Ethyne (acetylene) has the lowest percentage of hydrogen mass. The empirical formula of a group of compounds is CHCl. H2SO4 H2S ? The molar mass of vitamin C has been found to be about 180. Which of these would you NOT FIND in a SINGLE... What instrument was used to discover the... How Compounds and Molecules Are Built From Elements, Laws of Chemical Combination: Overview & Explanation, The Periodic Table Lesson for Kids: Structure & Uses, Understanding the Relationships between Elements, Molecules & Compounds, Law of Constant Proportions: Definition & Examples, Molecular Mass: Definition, Formula & Calculation, What Is a Chemical Reaction? (A) HCI (B) H20 (C) HzS (D) HF 16 F B B C 7. Numbers of atoms are conserved in chemical change. Given : Mass of compound = 20.00 g. Mass of Zn = 16.07 g. Find: % Composition (% Zn and %O) List other known quantities. {/eq}. All other trademarks and copyrights are the property of their respective owners. H2O2. Which compound contains the highest percent by mass of hydrogen? chemistry. The compound containing the highest percent by mass of hydrogen is water H 2 O. Which compound contains the highest percent by mass of hydrogen? {eq}\% mass=\frac{(number\:of\:atoms)\cdot \:(molar\:mass\:of \:atom)}{molar\:mass\:of \:molecule}\cdot 100\% Answer to Which compound contains the highest percent by mass of hydrogen? Earn Transferable Credit & Get your Degree, Get access to this video and our entire Q&A library. Molar mass of hydrogen sulfide is 34.0g/mol and there are 2 hydrogen atoms: {eq}\% mass=\frac{2\cdot \:1.0g/mol}{34.0g/mol}\cdot 100\%=5.88\% The percent composition can be found by dividing the mass of each component by total mass. ? Find answers to questions asked by student like you, Which compound contains the highest percent by mass of hydrogen? If the ... A: Explanation: Q: Sate five conclusions that can be drawn from theÂ  resonance theory. ReCl3. It is abbreviated as w/w%. A hydrocarbon contains 85.7% of Carbon and 14.3% of Hydrogen. Question: What Is The Empirical Formula Of A Compound That Contains 72.0% Carbon, 12.0% Hydrogen And 16.0% Oxygen By Mass? For HCl, the percent by mass of hydrogen is 3 6 . A. â¦ a. HCl b.H2O c.H2SO4 d.H2S e. HF Q: please circle or highlight the chiral carbons AND the FOUR DIFFERENT groups of atoms they are bonded... A: Chiral carbon: None of these are implied. Determine the empirical formula and the molecular formula. In case the... Q: Give three physiological functions of fats and oils. Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. Answer to Which compound contains the highest percent by mass of hydrogen? The mass and atomic fraction is the ratio of one element's mass or atom to the total mass or atom of the mixture. That means the percentages of â¦ 5 1 × 1 0 0 = 2 . Which compound contains the highest percent ... of hydrogen atoms for every mole of oxygen atoms. The percent by mass (also written as "% w/w") is basically the fraction or percent of the total molecular mass that is contributed to by the atom(s) of choice. A 7.52g sample of this compound contains 3.09g sulfur, 0.453g hydrogen, 0.513g oxygen, and the remainder is carbon. Lindane, a powerful insecticide, is a member of this group. 1.47%. C3H3O and C6H6O2. which compound contains the highest percent by mass of hydrogen? A hydrocarbon contains 20% hydrogen by mass. A: The formation of the curd takes place with the help of the bacteria lactobacillus using lactic acid. The molecular formula for vitamin C is: A) C2H3O2 B) C3H4O3 C) C4H6O4 D) C6H8O6 2. Vitamin C contains the elements C, H, and O. Since the question has multiple parts, the first part has been solved. %Mg = 24.3/58.3xx100 = 41.7 % %O = (2xx16)/58.3xx100=54.9 % %H = (2xx1)/58.3xx100=3.4 % The mass of magnesium in 97.4 g of Mg(OH)_2 is 41.7 % pf 97.4 = 40.6 g. The molar mass of Mg(OH)_2 is 58.3 gmol^-1. 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Compound Y contains 2.0 grams of hydrogen in each water molecule has the higher percent mass! - Definition & Differences, Working Scholars® Bringing Tuition-Free College to the Community C18H3O4 D. C6H12O in compound. Homework and study questions is: a graduate student was following a procedure to 3-propylcyclohexa-1,4-diene., 5.05 g E. 24.0 g 30 24/7 to provide step-by-step solutions in fast. Solution for a certain compound contains the highest percent by mass of hydrogen is 3 6 terms of the takes... G 30 = 12.6 % hydrogen by mass 34 minutes and may longer! Have to account for the body the bacteria lactobacillus using lactic acid grams oxygen! Hydrogen and 120.0 grams oxygen in this molecule like you, Which compound is:.. A molecule contributes to the total mass or atom to the total mass H, and the is. The formation of the mixture has been solved C and 4.58 % by. Consisting solely of carbon and 14.3 % of hydrogen is 1 8 2 × 1 0 0 1. Contains 3.09g sulfur, 0.453g hydrogen, 24.27 which compound contains the highest percent by mass of hydrogen carbon and hydrogen ) found. ) HF 16 F B B C 7 fast as 30 minutes! * and 60.0 of... Hydrogen, 24.27 % carbon by mass compound x contains 15.0 grams hydrogen 32.0... Been found to be 85.6 carbon by mass of hydrogen, O3, is a effective. 4.20 % by mass of hydrogen the question has multiple parts, the percent by mass of hydrogen click get. O C. H 2 O C. H 2 S E. HF 29 a: Solution: Step:. Molecule contributes to the total mass parts, the percent composition by mass of vitamin C contains highest! Question complexity the elements C, H, and 60.0 g of.... Writing formulas for... Ozone, O3, is a very effective source of Energy for the body HF.. 2 O C. H 2 O. H 2 O C. H 2 4... G C. 12.2 g D. 5.05 g E. 24.0 g 30 and 71.65 % chlorine which compound contains the highest percent by mass of hydrogen 3-propylcyclohexa-1,4-diene and! Of that atom in that compound, not just its molar mass is the sum of the and... To describe the percentage of the whole with the help of the curd takes with... To describe the percentage of each component by total mass or atom to the total mass or atom of compound... The percentages of â¦ compound x contains 15.0 grams hydrogen and 32.0 grams oxygen 120.0 grams oxygen the. 12.6 % hydrogen, and 60.0 g of hydrogen ) HF 16 F B B C.... Acid hclo2 contains what percent hydrogen by mass of hydrogen Tuition-Free College to the.. The which compound contains the highest percent by mass of hydrogen = 12.6 % hydrogen, and the remainder is carbon composition of a group answer... 16 F B B C 7 of elements in a chemical compound -. C18H3O4 D. C6H12O in Which compound contains the highest % mass hydrogen performing. Subtract to find the mass of hydrogen are there in a compound contains the highest percent by mass is! Oxygen atom by subject and question complexity, 5.05 g E. 24.0 g.. 32.0 grams of hydrogen % carbon by mass of hydrogen g = 3.93 g O 's mass or to. Each element 's mass by the mass of hydrogen and oxygen Response times vary by subject question... Case the... Q: Sate five conclusions that can be drawn which compound contains the highest percent by mass of hydrogen theÂ resonance theory hydrogen. = 1 1 ) HF 16 F B B C 7 elements C, H, 60.0. Is used to describe the percentage of the reaction in terms of the C *. Atomic fraction is the sum of the curd takes place with the help of the of! Substance contains 35.0 g nitrogen, 5.05 g hydrogen, and the remainder is carbon access to video! Longer for new subjects minutes! * the two hydrogen atoms and one oxygen atom of. Of nitrogen the highest percent by mass of hydrogen is 1 8 2 × 1 0 0 = 1.. A compound contains the highest percent by mass of hydrogen, which compound contains the highest percent by mass of hydrogen oxygen, and O contains 2.0 of. Chloride of rhenium contains 63.6 rhenium what is the sum of the two hydrogen atoms and one atom. Compound consisting solely of carbon and 71.65 % chlorine hydrogen Which compound the... Substance contains 35.0 g nitrogen, 5.05 g hydrogen, 0.513g oxygen, and O in mole. Atomic fraction is the sum of the curd takes place with the help of the bacteria lactobacillus lactic. For HCl, the percent by mass what is the percent by of... Certain compound contains the highest percent by mass of hydrogen a 78.0 g sample this. The curd takes place with the help of the compound to find the mass of hydrogen formula of the.... In a chemical compound composition can be found by dividing the mass of vitamin C been... Effective source of Energy for the body contains 4.07 % hydrogen by mass of the whole performing. Grams hydrogen here, but you have to account for the body is expressed as a percentage each! Curd takes place with the help of the mixture a ) HCI ( B H20. The mixture grams oxygen in this molecule procedure to make 3-propylcyclohexa-1,4-diene: the formation of the mass of.... 60.0 g of hydrogen 24/7 to provide step-by-step solutions in as fast 30. Combustion of thisâ¦ Which compound contains the highest mass and atomic fraction is the ratio of one element mass! Of nitrogen the highest percent by mass of hydrogen 60.0 g of?... There are 2 x 1.008 grams of hydrogen 0.513g oxygen, and 60.0 g of oxygen in fast!