A compound is used as a food additive. The compound has a molar mass of 176. 124 grams/mole. A 692. 5-gram sample undergoes decomposition, producing 283. 4 grams of carbon, 31. 7 grams of hydrogen, and 377. 4 grams of oxygen. What is the molecular formula of the compound? A. C3H4O3 B. C4H8O4 C. C6H6O6 D. C6H8O6 E. C6H8O8.

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5