CHE 2A Lecture Notes - Triiodide, Magnesium Chloride, Ccl2

• School: UC-Davis
• Department: Chemistry
• Course: CHE 2A
• Professor: A N D R E A S T O U P A D A K I S

Document Summary

Discussion 3: che 2a c06-07: empirical formula, find the molecular mass, find the mass percentage. Find the empirical formula of the compound: determine oxidation states of the underlined element in each molecule. Hno2: balance the following chemical equations by inspection: S2cl2 + nh3 n4s4 + nh4cl + s8: in an experiment, 0. 689 g cr(s) reacts completely with 0. 636 g o2(g) to form a single solid compound. Write a balanced chemical equation for the reaction: if 46. 3 g pcl3 is produced by the reaction (unbalanced equation): Cr: 51. 9961 g/mol; o: 15. 9994 g/mol; cl: 35. 453 g/mol; p: 30. 9738 g/mol. C: 12. 0107 g/mol; fe: 55. 845 g/mol; mg: 24. 3050 g/mol; br: 79. 904 g/mol. Mgbr2 = 184. 1 g: empirical formula, molecular mass, mass percentage. What is the percent mass of c in ccl2f2 ? (12) / ( 119) x 100% = 10% What is the percent mass of oxygen in sio2 : we decompose water into 0. 857g of hydrogen and 6. 86 g of oxygen.