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how many milliliters of 5 m nacl are required to prepare 1500 ml of 0002 m nacl what will be the concentration of the
a sample of commercial hydrogen peroxide solution was analyzed using the procedure in this experiment the results from
exposure to high doses of microwaves can cause damage estimate how many photons with a wavelength 12cm must be absorbed
the average person burns 12000 kj of food energy per day2800000 cal if the heat of combustion of sugar is 4000 calg and
you need to prepare 20ml of a drug dilution of 50mgml from a stock solution of 2g5ml how many mls of diluent will be
assume your eyes receive a signal consisting of blue light the wavelength 470nm the energy of the signal is 250x10-14 j
cuo has the distorted pts structure describe the arrangement of the copper and oxygen
which of the following reasons is most important in explaining why butanol ch3ch2ch2ch2oh has a higher boiling point
type the following formulas in order of increasing boiling point rbf co2 ch3oh
which attactive forces must be overcome in order to boil liquid ammonia nh3 dispersion forces ion-ion forces hydrogen
the instruction booklet for your pressure cooker indicates that its highest setting is 116 you know that standard
crystalline silicon has a cubic structure the unit cell edge length is 543pm the density of the solid is 233gcm3
when aluminum crystalizes it forms face-centered cubic cells the atomic radius of an al atom is 143 caluculate the
we can measure the concentration of hcl solution by reaction with pure sodium carbonate 2h na2co3 --gt 2na h2o co2
what is the density of an object with a weight of 32 grams if it has a volume of 4 cubic
a non-si unit of mass used in pharmaceutical work is the grain gr 15 gr 10g an aspirin tablet contains 50 gr of aspirin
1 how many grams of nacl is needed to prepare 150molar solution of nacl in a 250ml beaker using 1000g of water2 how
what are the types of forces in addition to london forces that are overcome in these changes using structural formulas
a 14639g sample of limestone was analyzed for fe ca and mg the iron was determined as fe2o3 yielding 00357g calcium was
to prevent tank rupture during deep-space travel an engineering team is studying the effect of temperature on gases
which is more concentrated with respect to sodium ions 50g of nacl in 500ml of solution or 59g of na2so4 in 500ml of
a 135 m aqueous solution of compound x had a boiling point of 1014degc which one of the following could becompound x
a hard water sample contains 00085 ca by mass in the form of ca2 ions what mass of water contains 12 g of
what is the empirical and molecular formula of acyclovir mw 225 c 4267 - h 492 - n 3110- o 2131weights c120 h1008 n140