Water has a surface tension of about 72 erg/cm2. When you add liquid detergent (dish soap) to water, the surface tension drops to 26 erg/cm2. (a) Draw a possible structure and orientation for a detergent molecule at an air/water interface. (b) Estimate the pressure inside soap bubbles of 10 mm, 0.1 mm and 0.001 mm diameter. (c) Calculate the minimum energy (based on creating new surface) to form 1 liter of pure water drops of sizes 10 mm, 0.1 mm and 0.001 mm diameter.

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

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