What does the specific heat for a substance indicate? a. the heat released when 1 gram of the substance burns b. the amount of heat required to increase the temperature of 1 gram by 1oc c. the amount of heat required to increase the temperature of 100 grams by 1oc d. the amount of heat required to increase the temperature of 1 gram by 100oc e. the heat released when 100 grams of the substance burns

Based on the equation and the information in the table, what is the enthalpy of the reaction?

What is the overall order of reaction for rate = k[no]2[o2]

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.