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what is the value of the mean ionic activity coecient for ce2so43 when the electromotive force emf for the cell ces
isotopes of elements are atoms of the same element that vary in the 1number of electrons associated with the nucleus
german physicist werner heisenberg related the uncertainty of an objects position x to the uncertainty in its velocity
calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n3 to n1
a sample of protein weighs 0800 g and is dissolved in 500 ml of water if the osmotic pressure of the solution is
a lactic acidlactate ion buffer solution contains 024 m hc3h5o3 and 082 m c3h5o3- respectively the ka value of lactic
br2 is being formed from hbr and h2o through the following chemical reactions under standard conditions 1 hbr-gt12h2
ethane enters furnace at 09 kgmin and burns with 200 excess air 50 of fuel is consumed and combustion is assumed
the analysis of a compound shows that it contains 200 h and 800 c the empirical formula
the freezing point of mercury is -388 c what quantity of energy in joules is released to the surroundings if 100 ml of
a graduated cylinder contains 247 ml of water after adding 3256 grams of a solid the volume reading of the cylinder
calculate how many g of iron can be produced using 2396 of if the yield is 82 fe2o3 3co ----gt 2fe
natural gas is a mixture of many substances primarily ch4 c2h6 c3h8 and c4h10 assuming that the total pressure of gases
calculate the apf for a the simple cubic and b body centered cubic lattices as volume of atomsvolume of cell c which
draw the mechanism of the addition of hbr to cyclohexene identify each step indicate
question 1 the gas-phase dipole moment of the hydroxyl radical bulloh is 166 d and the bond length for this species
300 dm3 of ammonia reacts with 300 dm3 of nitrogen monoxide at 100 degc identify which gas is in excess and by how much
what kind of lipid forms when a glycerol combines with fatty acids through dehydration
consider the decay series aiexclbiexclciexcld where a b and c are radioactive isotopes with halflives of 450 s 150 days
use the ion-electron method to balance each of the redox reactions after balancing the equations answer the following
afor the half reaction pb4aq2e- pb2 calculate the cell voltage e at 25c if the concentration of pb4 is 05m and that of
in the photosynthesis reaction how is the equilibrium yield of glucosec6h12o6 affected increaed decreased no change by
the following data were collected for the reaction of tbutylbromide ch33cbr with hydroxide ion at 55 degrees celsius
reaction 2nog2h2ggtn2g2h2og calculate the equilibirum concentration of all the gases in class my instructor said that a
carbon monoxide040mol and water04 mol are placed in a 20 vessel and are allowed to reach equilibirum at 100 degrees