10. A compound has the following percent composition by mass: C: 40.92%; H: 4.58%: O: 54.50%....
6. The elemental mass percent composition of ascorbic acid (vitamin CC) is 40.92% C, 4.58% H, and 54.50% 0. Determine the empirical formula of ascorbic acid. [0.5] 7. Draw the Lewis structure of nitrate and assign formal charges to each of the atoms. [0.5]
6. A certain compound has the following elemental composition: C, H, O, N. In a combustion analysis, 3.895 g of it was combusted to produce 9.087 g of CO2 and 3.411 g H20. Separate analysis determined that it is 12.38% N, and its molar mass is 226.4 g/mol. Determine its empirical and molecular formula.
6. A certain compound has the following elemental composition: C, H, O, N. In a combustion analysis, 3.895 g of it was combusted to produce 9.087...
15. The percent composition by mass of a compound is 76.0% C, 12.8% H, and 11.2%0. The molar mass of this compound is 284.5 g/mol. What is the molecular formula of the compound? A) C1oHO B) C9H10 C) C16H30, D) C20H30, E) C13H4O2 16. The percent composition by mass of an unknown chlorinated hydrocarbon was found to be 37.83% , 6.35% H, and 55.83% Cl by mass. What is the empirical formula of this compound? A) CH.CIB) CH,CIC) CH.Cl? D)...
Be sure to answer all parts. The analysis of a compound gives the following percent composition by mass C: 56.04 percent; H: 9.094 percent; S: 9.977 percent; O: 24.89 percent. What is its molecular formula given that its molar mass is 321.5 g? C,H,S,O C atoms H atoms S atoms O atoms
8. An unknown compound has the following percent composition: 30.446% nitrogen and 69.554 % oxygen. The molar mass of this compound is 138.00 g/mol. Determine the empirical and molecular formula for this unknown. [Given molar masses: N 14.01 g/mol; O 16.00 g/mol] (8 Pointsl
onent of protein called threonine has an approximate molar mass of 120 g/mole. If the percent sition is as follows, find the empirical and molecular formulas of threonine? C = 40.33%, H = 7.616%, O = 40.29% and N = 11.76% aethyllead, the "lead" additive in leaded gasoline, has a percent composition by mass of 64.06% Pb, 29.71 % C and 6.23% H. What is the empirical formula of tetraethyllead? A 50.51 g sample of a compound made from iron...
3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6% H, and 44.4% O by mass. What is the empirical formula? 4. Urea contains C, H, N, and O. A 2.54 gram sample of urea is found to contain 0.51 g carbon, 0.17 g of hydrogen, and 1.19 g of nitrogen. What is the empirical formula of urea? 5. Putrescine, a substance produced by decaying animals, is composed of 54.5 % carbon, 13.6% hydrogen,...
What is the empirical formula for a compound that has the following mass percent composition: C, 55.80%; H, 7.03%; 0, 37.17%. tion Select one: O a. CH. b. C,H,O2 oc. CH,0 O d. CH.02 Оe. Cно
Lactic acid is produced upon physical activity. The percent composition of lactic acid is 40.0%C, 6.71%H, and 53.3%O. a) Determine the empirical formula of lactic acid. b) If the molar mass of lactic acid is 90.08 g/mol, what is the molecular formula for this compound?
The percent composition by mass of an unknown compound with a molecular mass of 180.156 amu is 40.002% C, 6.7135% H, and 53.284% O. Determine the compound's empirical and molecular formulas. v 1st attempt Part 1 (1 point) See Periodic Table Empirical formula: x" x "He → Part 2 (1 point) D See Hint Molecular fomula: x x. "He → ,