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a layer of peat beneath the glacial sediments of the last ice age has a carbon-14carbon-12 ratio that is 214 of that
if the most common monosaccharides have the formula c6h12o6 why do the resulting disaccharides have the formula
when two cotton plugs one moistened with ammonia and the other with hydrochloric acid are simultaneously inserted into
while resting the average 70-kg human male consumes 14 l of pure o2 per hour at 25 degc and 100 kpa how many moles of
what solid breaks in irregular jagged pieces and what solid depends on electron sharing to hold it together and does
what is the most significant intermolecular force acting between molecules of
stress-strain curve what information does this curve give you which test would you get the stress-strain curve from
which is denser at the same temperature and pressure dry air or air saturated with water vapor
how do intermolecular forces and kinetic energy interact to determine at what point a liquid will
crude petroleum is a mixture of many different components how might one separate out the components to begin the
find the amount of heat energy needed to convert 150 grams of ice at -15degc to ice at -63degc14760 joules because the
1 define an isomer when considering isomers what structural differences make molecules isomers2 butane is listed as
at its normal melting point of 266 k the enthalpy of fusion of bromine is 108 kjmol determine iquests universe for the
the solubility product constant for magnesium hydroxide mgoh2 is 21 x 10-13 what would you expect the ph to be of a
is the average kinetic energy of molecules proportional to the temperature of gas
the dissociation constant of the weak acid hf is ka hf-hf if at equilibrium the concentrations of h and f- are each 26
carbon dioxide is in the news frequently in connection to climate change what are two ways that increased carbon
what volume of o2 at stp is required to oxidize 80 l of no at stp to no2 what volume of no2 is produced at stphow would
the ph of 010 m pyridineaq is 913 what is the value of kb for
use the concept of hydrogen bonding to explain which would hurt more a belly flop dive into a pool of water or oil hint
a gas of unknown identity diffuses at a rate of 833 mls in a diffusion apparatus in which carbon dioxide diffuses at
a weather balloon contains 880 moles of helium at a pressure of 0992 atm and a temperature of 25 degc at ground level
a spray can is used until it is empty except for the propellant gas which has a pressure of 1344 torr at 23 degc if the
if it takes 23g of naoh solution to completely neutralize 25 ml of sulfurous acid solution h2so3 what is the
carbonic acid h2co3 is a diprotic acid withka1nbsp 42times10-7nbspandnbspka2nbsp 48times10-11the ion product for water