Choose all of the following that are true about fusion: Occurs in stars like our Sun. O Nuclear fusion is the common reaction in today's nuclear power plants O small nuclei combine to form a larger one. O It is the reaction in which two atoms of hydrogen combine together, or fuse, to form an atom of helium. O the splitting of an atomic nucleus into two or more lighter nuclei accompanied by energy release O It uses Uranium as its fucel. O Joins Hydrogen to make Helium while releasing energy

A protein’s concentration can be determined spectrophotometrically by mixing it with an indicator called a Bradford reagent and measuring the amount of light absorbed by the protein. Use the plot below to determine the mass of protein (in micrograms, μμg ) in 100.0 mL of the solution if its absorbance is 0.398. A.  52 B.  3.1 C.  2.4 D.  0.52 E.  0.031

Why are ducks waterproof? It’s because they produce copious amounts of oils from their uropygial glands and spread it across their feathers. In this exercise, we’ll be investigating the molecular structure of one of these preen oils to determine how it keeps ducks dry. Q.5 - Preen oil is actually a complicated mixture of many different organic compounds, such as the structure seen previously.. Ornithologists have determined that birds often use preen oil compounds for scent recognition. Below, several different chemicals isolated from preen oil are shown, along with their vapor pressures at room temperature. p-cymene has the highest vapor pressure, meaning it is the most easily evaporated compound of the three listed. Explain why p-cymene has a higher vapor pressure at room temperature compared to the other compounds. Make sure to explain what holds the p-cymene in the sample. (Image attached)

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4) The intensity of gamma rays, X-rays, or any other radiation is A) inversely proportional to the cube of the distance from the source. B) inversely proportional to the distance from the source. C) inversely proportional to the square of the distance from the source. D) directly proportional to the square of the distance from the source. E) directly proportional to the distance from the source. dele (1

Select the correct starting material for the reaction shown below: 1) MgBr 2) H3O+ work up OH

Answer choices for blank 1(there is only one correct answer for each blank): A B C D E F G H J Answer choices for blank 2(there is only one correct answer for each blank): A B C D E F G H J Answer choices for blank 3(there is only one correct answer for each blank): A B C D E F G H J Answer choices for blank 4(there is only one correct answer for each blank): A B C D E F G H J Answer choices for blank 5(there is only one correct answer for each blank): A B C D E F G H J