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Give two examples of elements as well as compounds that exist in the human body and define their function.
The average concentration of strontium ion in seawater is 8.00 mg of strontium ion per kg of seawater. What is the molarity of the strontium ion if the density of the seawater is 1.025 g/mL.
Find the molcular heat capacity in units. Does the law hold up? Can you distinguish a metallic element from a nonmetal this way. Metalloids
Calculate the % atom economy for the following two methods for converting benzene, C6H6, to aniline, C6H5NH2.
An unknown gas Q effuses 1.26 times as fast under the same conditions as Xe gas. What is the molar mass (g/mol) of Q?
The absorbance of four standard Fe2+ solutions were measured to get a calibration curve that gave the subsequent best fit line
if 223 g of ethanol are recovered after 1.63 kg of glucose react, what is the percentage yield of the reaction
a semiconductor laser in a cd player has an output wavelength of 780 nm and a power level of 0.10 mw. how many photons
a 2.545g sample contains carbon hydrogen and oxygen. it is subjected to carbon-hydrogen analysis and 3.703g of co2 and
Which reaction intermediate is formed when 4-methylcyclohexene reacts with Br2 dissolved in CCl4?
The standard width between rails on North American and most European railroads is 4 ft. 8 in. Calculate this distance in meters and centimeters.
The following are spontaneous reactions. List the species in these reactions in the order of oxidizing strength, from the strongest to weakest oxidizing agent
What are the consequences of removing some of the phase transfer catalyst along with the hot reaction mixture after refluxing. a)The phase transfer catalyst acts to remove small amounts of water from the mixture leading to increased purity
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