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a 120g sample of dry ice is added to a 755 ml flask containing nitrogen gas at a temperature of 250 degrees celsius and
what is the name given to reactions between an acid and a
the equilibrium constantnbspkc is calculated using molar concentrations for gaseous reactions another form of the
what is the ionization constant at 25 degc for the weak acid ch32 nh2 the conjugate acid of the weak base ch32nh kb
considering two samples containing n and o sample 1 has 1-826 grams of n and 4173 grams of o sample 2 has 1522 grams of
describe how the human defends itself after contracting a food-borne illness explain using chemistry and cellular
question1nbspwhat is the method for preparing a dilute solution and what formula would you use to calculate this how
1 circle the acidbase pair that would serve best to prepare a buffer having a ph of 700cross out that which you would
how many ml of 6m naoh would be required to neutralize 1ml of stock sulfuric acid stock assay
a 120g sample of dry ice co2 is added to a 755 ml flask containing nitrogen gas at a temperature of 25 degrees celsius
1 in the decay series there are six radioisotopes that decay by alpha emission including th-232 itself and four
consider a mixture of three gasses the pressure of gas a in this system is 02 atm the pressure of gas b is also 02 atm
what types of errors could have occurred if the ratios of the empirical formula for magnesium oxide are different than
a 331g block of copper specific heat capacity of 0386 jgdegc at 893degc is dropped into 500 g of a liquid at 220 degc
if 110 g of steam at 1000 c condenses into 385 g of water initially at 270 c in an insulated container what is the
oxygen is a nonpolar gas but it will dissolve a little bit in water which is a polar solvent which intermolecular
a buffer solution is prepared by mixing 5000 ml of 0600 m ch3cooh with 5000 ml of a 100 m ch3coona solution what is the
a buffered solution is prepared by mixing 1000 ml of 0250 m nh3aq and 1500ml of 0200 m nh4no3aqa calculate the ph of
how many copper atoms are in a pure copper statue with a mass of 144
the cryoscopy method is used to find the molar mass of a nonvolatile solute why do we use a nonvolatile solute
1 calculate the ph of a 0300 m solution of lactic acid for which the kavalue is 140 x 10-42 calculate the ph of a 030 m
h2x is a diprotic acid with ka1nbsp 14middot10-4nbspand ka2nbsp 81middot10-9 suppose 100 ml of 0100 m h2xaq is titrated
calculate the ph of a buffer solution prepared from 0155 mol of phosphoric acid 0250 mole of kh2po4 and enough water to
what is the empirical formula of a compound that consists of 3999 carbon 673 hydrogen and 5328 oxygen cho
what is the concentration of a hcl solution if 200 ml of the solution is neutralized by 150 ml of a 010 m