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an unknown salt is either naf nacl or naocl while 0050 mol of the salt is dissolved in water to form 0500 l of solution
beta sheets are a kind of secondary structure in proteins a segment of a single chain in an antiparallel sheet has a
acetylene gas c2h5 at 25 degrees c is burned during a steady-flow combustion process with 30 percent excess air at 27
a compute the initial concentrations of scn- and fe3 ions while a solution was prepared by mixing 3ml of 000280 m kscn
a sample of ideal gas at room temperature occupies a volume of 160l at a pressure of 772torr if the pressure changes to
if you were given a clear colorless solution as well as asked to determine whether or not protein was present would a
when butanoic acid is treated with sodium borohydride 1-butanol is not obtained but bubbling is still observed as well
an aqueous cacl2 solution has a vapor pressure of 816 mmhg at 50 degc the vapor pressure of pure water at this
4 by referring to the theory and procedure sections complete table 1 below by calculating the initial scn- and
1 what are some of the ways that the structure of molecules can be shown 2 how does the number of electrons shared
suppose a 500 l of sample of o2 at a given temperature and pressure contains 108 x 10 to the power of 23 molecules
to perform a lab i make a 15 liter solution with 00156 grams of naoh what is the ph of the
a sample of propane c3h8 contains 117moles of carbon atoms how many total moles of atoms does the sample
what is an ion of an element when an element has a charge what happens to the
a quantity of gas has a volume of 2000 liters at 17 degrees celsius and 30 atm of pressure to what temperature must
for the reaction 2 nh3 ch3oh rarr products what mass of nh3 is needed to react with 21 grams of
a 350-ml sample of 0150 m acetic acid hc2h3o2 is titrated with 0150 m naoh solution calculate the ph after the
a 500-ml sample of 000200 m agno3 is added to 500-ml of 00100 m naio3 what is the equilibrium concentration of ag in
what mass of oxygen is produced when 50g of na2o2 sodium peroxide
question 1 a mixture of water and graphite is heated to 890 k in a 10 l container when the system comes to equilibrium
a student dissolves 80 mg of a crude product in 45ml the minimum required of methanol at 25 degrees celsius she cools
you are given a mixture containing two compounds- a and b both compounds have a solubility of 1 g100ml of solvent at 20
compute the amount of amonia which must be added to a 0004 m ag solution to prevent the ppt of agcl when concentration
a patient ingests fdg in preparation for a pet scan explain how many days must for 9999 of the 18f to decay the half
nitrogen is fixed in ecosystems in ways declared below state which one of the statements below is falseaby