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problem- to monitor the breathing of a hospital patient a thin belt is girded around the patients chest the belt is a
problem- question- elemental analysis of the unknown gas reveals that it is 3045 n and 6955 o what is the molecular
problem- an unknown element x reacts with potassium to form the compound k2x in other compounds this element also can
problem- question if 100 mol of argon is placed in a 0500-l container at 210c what is the difference between the ideal
problem- the ka of a monoprotic weak acid is 849x10-3 what is the percent ionization of a 0189m solution of this
problem- a a buffer is created by adding 020 moles of acetic acid ka 17x10-5 and 015 moles of sodium acetate to a 100 l
problem- if you purchased 381ci of sulfur-35 how many disintegrations per second does the sample undergo when it is
problem- an alternative method to sanitizing pool water is to increase the salinity and pass an electric current
problem- following are some statements about the structural features of nucleic acids identify whether the statement
problem- a zinc bar weighing 30 kg is attached to a buried iron pipe to protect the pipe from corrosion an average
problem- how many single covalent bonds must a fluorine atom form to have a complete octet in its valence shellany help
problem- in an effusion experiment it was determined that nitrogen gas n2 effused at a rate 1812 times faster than an
problem- silver and rubidium both form 1 ions but silver is far less reactive suggest an explanation taking into
i require skilled aid to answer the given problemproblem- the ph of a solution is maintained constant at 65 calculate
problem- a buffer is prepared from 025 mol benzoic acid and 015 mol sodium benzoate in 500 ml solution a what is the ph
problem- a 350ml sample of 00250m nacn solution is titrated with 00500m hcl calculate the ph of the solutiona before
problem- you perform a titration of 100ml of 01m h2nnh2 kb 3x10-6 by 02 m hno3 calculate the ph after the addition of
problem- write the condensed structural formula of the ester formed when each of the following reacts with methyl
problem- calculate the mass of cadmium hydroxide that could be prepared from 125ml of 0250 m cdcl2 mixed with 125 ml of
problem- butanal molecular weight72 has a boiling point of 76 degrees celsius while 1-butanol molecular weight74 has a
problem- a buffer is made by mixing together 500ml of 05m ch3nh2 and 500 ml 07 m ch3nh3cl kb 438x10-4a what is the ph
problem- you are interested in manufacturing a diamond from graphite burning one mole of graphite in oxygen yields
problem- for how many minutes would 855 a of current need to flow to produce 317 x 104 cgive your answer with short
problem- a 0210 g sample of weak acid that has a molar mass of 192 gmol was titrated and totally neutralized which
problem- calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n 6