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write out the balanced chemical equation that occurs when silver tarnishes in the presence of hydrogen sulfide a gas
a gas of unknown molecular mass was allowed to effuse through a small opening under constant pressure conditions it
consider the arrangement of bulbs shown in the drawing each of the bulbs contains a volume of gas as shown pn2 700
what are the values of e l and lz for an f8 atom whose electron has the following wave functions listed as wavefunction
a mixture of gases contains 175 g of n2 484 g of h2 and 348 g of nh3 if the total pressure of the mixture is 573 atm
a a piston at 62 atm contains a gas that occupies a volume of 35 l what pressure would have to be placed on the piston
what is the mass of the product after the reaction between 250 mg of trans-cinnamic acid and 06 g of pyridinium bromide
1 mole equivalents of sodium hydroxide 2 mol dm-3 solution will be required to form the phospharane ph3pchcooet from
the koh solution standardized is used to titrate a 2000ml sample of sulfuric acid h2so4 solution of unknown
a membrane distillation unit is used to remove water and lactose from milk in the unit warm milk flows through the
1 calculate the theoretical yield of aspirin obtained when 20 g of salicylic acid and 50 ml of acetic anhydride density
given a buret filled with 012 m acetic acid and a second buret filled with 014 m sodium acetate how many milliliters of
a mixture of the compounds magnesium chloride and sodium oxide contains 265 g of magnesium and is 825 by mass
an electron in the hydrogen atom makes a transition from an energy state of principle quantum number n to the n1 state
calculate the ph you would expect to measure if 200 ml of 05 m acetic acid were mixed with 100 ml of 05 m sodium
- in what proportion should nacl and ki be mixed so that the mixture will contain the same percentage of halogen as
why is the product of reaction of m-toluic acid in 3m naoh soluble in
how may peaks do you expect to see in the nmr of the following molecule what would be the multiplicity of each of those
a sample of 1 mol perfect gas molecules with cpm equal to 7r is put through the following cycle a constant-volume
calculate the amout of coke needed to be burned in order to heat 500kg of water from 20 celsise to 50 celsise the heat
onsider an exposed portion of your body eg your forearm with a short-sleeved shirt while you are sitting in a room
a sample of unknown material containing champ o is analyzed to determine the molecular weight a 125g sample is burnt
calculate the ph in the solution formed by adding 100 ml of 0050 m naoh to 400 ml of 00250 m benzoic acid hc7h5o2
find the ph of the equivalence points and the volume of 00372 m naoh needed to reach it in titrations of 289 ml of