The maps above show a front as it moves east across the United States. Which of these describes the weather change that can be expected for Amarillo, Texas? A. The cold front will bring cooler temperatures and snow because the cold front is producing large amounts of energy and snow moving southeast.

B. The warm front will bring warmer temperatures with hot air for several days because it pushes the cold air out of the way.

C. The warm front will bring warmer temperatures with light rain for a few days because the warm air rises and cools producing rain.

D. The cold front will bring cooler temperatures with thunderstorms and rain, which causes the moisture in the warm air to condense and release large amounts of energy.

What are the major products produced in the combustion of c10h22 under the following conditions? write balanced chemical equations for each. a. an excess of oxygen b. a slightly limited oxygen supply c. a very limited supply of oxygen d. the compound is burned in air

The answer for #3 is c but i don't know why

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.