c) N2O3. Calcium accounts for 1.5% of body mass. 28.2k LIKES. Also, the numerators are the mass of hydrogen in the compound in grams, and the denominators are the molar masses of the compounds … Hydrogen atoms are the most numerous type of atom in a human, but because they are so light, they only make up around 10% of the mass. It's found in proteins and nucleic acids. Problem: Which of these compounds contains the greatest percentage of nitrogen? Nitrogen is about 3.3% of body mass. Hydrogen is in water, plus it's an important electron carrier. … A) HCl B) H2O C) H2SO4 D) H2S E) HF. Find percentage nitrogen by mass in Histamine? a) C6H3N3O7 b) CH4N2O c) LiNH2 d) Pb(N3)2 FREE Expert Solution Show answer. In the calculations below, I have rounded the masses to whole numbers. a) NH2OH. Finding molar mass starts with units of grams per mole (g/mol). 9.7k SHARES. (c) contains 6 moles of carbon atoms per mole of molecules of Vitamin C. (d) has a molecular mass of 176.12. a&c a,c&d a,b&c all of the above 6. 71 1001MSC Workbook Prepared by Dr. Abdullah Karaksha b. Nitrogen in C 10 H 14 N 2: Q72 Calculate the percent composition and determine the molecular formula and the empirical formula for the nitrogen-oxygen compound that results when 12.04 g of nitrogen gas (N 2) is reacted with enough oxygen gas (O 2) to produce 39.54 g of product.The molar mass … Which of these compounds contains the greatest percentage of nitrogen… Answer to 3. Example: What is the total mass of each of the following compounds? A substance contains 35.0 g nitrogen, 5.05 g hydrogen, and 60.0 g of oxygen. About 29 of these elements are thought to play an active positive role in life and health in humans. Which compound contains the highest PERCENTAGE of NITROGEN BY MASS? 25. Which compound contains the highest percentage of nitrogen by mass? Answer : 37.84 Solution : NA Related Video. How many grams of hydrogen are there in a 156-g sample of this substance? d) NH4NO2 a. N2O5 b. Of the compounds listed in the question, water has the highest percent mass of hydrogen. View All. Divide the mass of hydrogen in each compound by the molar mass of the compound and multiply by 100. 85% (159 ratings) Problem Details. The average 70 kg (150 lb) adult human body contains approximately 7 × 10 27 atoms and contains at least detectable traces of 60 chemical elements. 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. 9.7k VIEWS. A) 7.87 g B) 782 g C) 15.7 g Text Solution. If the compound contains 12.8% nitrogen and 9.8% sulphur how many nitrogen and sulphur atoms are present per atom of sodium : b) NH4NH2CO2. The molecular weight of a compound is 329 g/mol and contains 1 mole of Na per mole of molecules. 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