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a another first-order reaction as well has a rate constant of 265 10-2s-1 at 24 c define what is the value of k at 51
137cs decays by beta minus emission to an isomeric state in 137ba which then decays by the emission of a gamma-ray if
a 5000ml solution of the acetylsalicylic acid hc9h7o4 is titrated with 01000 m koh it needed 2208 ml of koh to reach
compute the molarity of a 35 solution by weight 35 g hcl 100 g of solution at this concentration the solution has a
the ph range given is typically 0 - 14 concentrated acids as well as bases may fall outside this range compute the ph
compute how many milliliters of 0100 m hcl should be added to 250 ml of a 0200 m solution of nh3 to prepare a buffer
1 explain what is the ph of a buffer prepared by adding 500 ml of 0030 m phenol hc6h5o to 500 ml of 0030 m potassium
how does raising the concentration of a nonvolatile solute in water affect the subsequent properties- a vapor pressure
the adrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency a
compute the ph of a solution that is 010 m propanoic acid hc3h5o2 as well as that is also 015 m in potassium propanoate
nitrous oxide is a significant greenhouse gas the global sink n2o is 126 tg n yr-1 the mixing ratio is 5595
reaction of 1 3-diethylpropanedioate with- naoet isobutly bromide as well as h h20 and heat this is all the similar
the product of furan as well as maleic anhydride in diethyl ether reacts at room temperature moreover forms the exo
a 620ml sample of 10 m naoh is mixed with 580ml of 10 m h2so4 in a large styrofoam coffee cup the cup is fixed with a
potassium-40 has a natural abundance of 00118 explain how many atoms of potassium-40 are present in a 135 g sample of
according to the bohr model the allowable energies of the hydrogen atom are specified by the equation- e -217 x
1 we have physically shown the electric field line is perpendicular to the equipotential line explain why is this
a constant net force of 75 newton acts on an object initially at a rest as it moves through a parallel distance of 060
consider a binary separator used to separate aluminum cans from glass a total mass of 08tonehr enters it is desired to
a 500f and a 800f capacitor are connected in series and this combination is connected across a 460v potential
calculate the capacity of a roll crusher the separation is 7 millimeter speed of the rollers is 50 revolutions per
an air cyclone is used to separate solid particles having different masses the cyclone radius is 08 meter and its
two light bulbs use 30 w and 60 w respectively when connected in parallel to a 120-v source how much power does each
a 2 feet diameter trommel screen is used to separate municipal refuse determine its critical
determine the rotor speed of a shredder the shredders motor inertia is 75000 lb-ft2 starting time is 30 s and power is