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the unit of denier is a way to characterize fibers defined as the weight in grams of a length of 9000 meters nylon 6
an empty erlenmeyer flask weighs 2523 g when filled with water d 100 gcm3 the flask and its contents weigh 5033 ga
the upper falls in yosemite national park at 440 m is among the 20 highest waterfalls in the world estimate the
lithium is the least dense metal known density 053 gcm3 what is the volume occupied by 800 x103g of
how do you know when an element that is by itself has an oxidation number of zero or its
the half-life of sr-90 is 29 years what fraction of the atoms in a sample would remain after 100 years how would you
what is adsorption isotherm and desorption isotherm and hysteresis list the important applications of sorption
suppose your dorm room is 13 ft wide by 15 ft long by 85 ft high and has an air conditioner that exchanges air at a
an unknown metal m reacts with oxygen to give the metal oxide mo2 identify the metal based on the following
an unknown material begins to emit electrons from its surface when exposed to photons with wavelengths shorter than 540
the abundance of deuterium in water is 00150 howmany moles of water would be required to obtain 00760 moles of
calculate the amount of copper sulfate in solution formed by the reaction of500g of elemental copper with excess silver
calculate the temperature in k where the specific heat of carbon dioxide is 093 kjkgk if the temperature dependence of
1 a sample of propanec3h8 is placed in a closed vessel together with an amount of o2 that is 250 times the amount
a u-tube manometer indicates a pressure drop of 10 inches water across an air filterthe air is at 26 degrees celsius
a research submarine is designed to operate 3 km below the ocean surface if the interior pressure is 1 atm what is the
the eq established when 2 moles of muck s are added to a 1 l solution of 3 moles of slop dissolved in slime l producing
a 94-g sample of powdered titanium was added to a graduated cylinder originally containing 68 ml of water after
the ultimate source of all chemical products is the earth including its water and atmosphere sulfuric acid is a good
what are the rules of giving the iupac name and the common name of aromatic hydrocarbons with 1 2 and 3
1 is stimulated saliva acidic or basic and what is its corresponding exact ph or if possible ph range2 is resting
table salt is composed of sodium and chloride table salt is composed of 607 chloride ions calculate the mass of sodium
gas a2 reacts with gas b2 to form gas ab at a constant temperature the bond energy of ab is much greater than that of
the antibacterial agent sulfamethoxazole is an unionized acid with a pka of 50 what is the ratio of this drug in
the otc antihistamine chlorpheniramine maleate is a cationic acid with an unionized conjugate base and a pka of 94