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calculate the empirical formula for each of the following natural flavors based on their elemental mass percent
why does b2h6 not have the same kind of structure as c2h6 draw the structure that b2h6 does have and describe the
when you follow the manufacturers specifications 10 galon of a latex gloss enamel paint covers 350 square feet of a
write the electron configuration for the ground states and the valence states of be b c and n atoms so that each one
show how the electronic structure of the no molecule can be inferred from that of o2 explain why no has a stronger bond
the atomic mass of element x is 2942 amu a 3322 g sample of x combines with 9210 g of another element y to form a
assuming that a neutron star has the same density as a neutron calculate the mass in kg of a small piece of a neutron
the decomposition of n2o5 is a first-order reaction at 25 c it takes 52 hours for the concentration to drop from 0140 m
a a 150 g sample of water initially at 450ocis mixed with a 200 g sample of water initially at 840oc find the final
a the specific heat of lead is 0129 jgoc find the amount of heat released when 24 mol of lead is cooled from 372oc to
a the specific heat of ethanol is 246 jgoc find the heat energy required to raise the temperature of 193 g of ethanol
a block of copper mass at 500 grams and initially at t 293 k is in thermal contact with an electric heater at a
the first ionization energy of bismuth is 703 kjmol what is the longest possible wavelength of light that could ionize
a compound is 400 c 670 h and 533 o by mass assume that we have a 100 g sample of this compoundthe empirical formula of
among the elementary subatomic particles of physics is the muon which decays within a few nanoseconds after formation
a 2330 g sample of a solid is placed in a flask toluene in which the solid is insoluble is added to the flask so that
3 solutions are mixed together to form a single solution one contains 02 moles of pbc2h3o22 the second one contains 01
a solution of malonic acid h2c3h24 was standardized by titration with 01000 m naoh solution if 2491 ml of the naoh
to 250 ml of a 0065 m solution of barium nitrate is added 100 ml of a 0121 m solution of sulfuric acid determine the
in the titration of an impure sample of khp it was found that 2035 ml of 01163 m naoh was required to react completely
a 1268 g sample of a metal carbonate mco3 was treated with 10000ml of 01083 m sulfuric acid h2so4 yielding co2 gas and
vanillin used to flavor vanilla ice cream and other foods is the substance whose aroma the human nose detects in the
if 3985 ml of 009827 m naoh is required to neutralize 07997 g of an unknown acid ha what is the molar mass of the
1 suppose that you are going to collect h2 gas produced from the reaction of an acid with a metal such as zinc this
a 350 ml solution of 0095 m cacl2 is mixed with 250 ml of 00012 m bacl2 if kf is slowly added which flouride salt will