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copper exists as two isotopes 63cu 629298u as well as 65cu 649278 u explain what is the approximate percentage of 63cu
explain what happens when a balloon with static electricity is brought next to a running stream of water why does this
a student stopped her oxalic acid titration the instant she saw a faint pink color in the solution but she failed to
if 1089ml of your standardized naoh solution was utilized to titrate a 2500 ml sample of a phosphoric acid h3po4aq
define the phase diagram for acetic acid given the following information triple point at 2897k as well as 129kpa
forecast the number of unpaired valence electrons in the complex ion crcn64- and draw out its d-orbital energy level
state balanced equations to describe the reaction of hydrogen h2 and a chlorine cl2 b nitrogen n2 c calcium ca d
calculate the formula and the ions produce by using the condensed electron configuration and lewis dot structure to
at high temperatures a dynamic equilibrium exists bw carbon-monoxide carbon-dioxide and solid carboncs co2g ltgt 2cog
compare the value of mlambda for a blackbody at 2000k to that for a blackbody at 1500k at lambda 100 micro
one oxide of iron is fund to consist of 2236oxygen by mass which of the following represents possible mass percent
confirm using calculations that the following dilutions will produce 100 ml of 0025 m acetic acid measure out 100ml of
explain what are the minimum frequency and maximum wavelength of light that will dislodge an electron from
find out the kinetic energy of a photo emitted electron from the surface of cs if the wavelength of the incident light
an aqueous solution of sulfuric acid contains 5716 g of h2so4 per liter of solution as well as has a density of 1329
for a multiple choice question like which of the subsequent species does not have resonance structures is there a
strontium-90 a radioactive isotope is a major product of an atomic bomb explosion it has a half life of 281 yearsa
if the thermal composition of phosphine into phosphorus and molecular hydrogen is a first order reaction4ph3g - p4g
a 100 l reaction container is charged with 0704 mol of nobr which crumble at a certain temperature say between 100
h2 i2 harr 2hiwhile 46g of i2 and 10g of h2 are heated at equilibrium at 450 celsius the equilibrium mixture contains
abtilde2c keq100 in an experiment 01 mole of a 01 mole of b and 002 mole of c are introduced into a 5 liter box explain
in an experiment nitrogen gas was composed over water when sulfuric acid solution was mixed with a sodium nitrite
are the bonds in each of the subsequent substances ionic non polar covalent or polar covalent arrange the substances
problem 351a rigid vessel filled to one-half its volume with liquid nitrogen at its normal boiling point is allowed to
an experiment was done utilizing a simple spectrophotometer an aspirin tablet was added to 2ml of 1 m sodium hydroxide