The temperature of 150 mL of water is 25°C. What must happen for the temperature of the water to increase to 35°C?
O
A. Thermal energy must be transferred to the water to increase the
average kinetic energy of the water molecules.
B. Water must be removed to decrease the thermal energy
ООО
C. More water must be added to increase the thermal energy
D. Thermal energy must be transferred from the water to decrease
the average kinetic energy of the water molecules.

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.

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

Find the number of moles of argon in 364g of argon.