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prepare 100ml of 005 m phosphate buffer ph 63 utilizing solid nah2po4 as well as solid na2hpo4 compute the amounts of
at equilibrium the concentrations in the system were found to be n2o2011 m and no 0500 mn2g o2g lt-----gt 2nogif more
if 4168 kj of heat is realsed be a reaction inside a calorimeter containing 7540 g of water the temperature of the
a certain substance has a heat of vaporization of 5388 kjmol define at what kelvin temperature will the vapor pressure
the ecoli chromosome is 128 mm long under optimal conditions the chromosome is replicated in 40 minutes a explain what
1 compute the mass of 285 mol no22 compute the number of moles of compound in 360 g feclo433 compute the total number
compute the first and second ionization energies in ev of beryllium using salters
interperation of the data plots consistently show that the freezing points of three solutions are too high as a result
explain what can be said about the effect each of the three solutions has on the rate of the reaction use combinations
very small crystals composed of 1000 to 100000 atoms called quantum dots are being investigated for utilize in
the initial aerobic plate count is 38104 cfug after 1 week the plate now contains 38 106 cfug you decide that an
a certain reaction has activation energy of 2827 kj mol explain at what kelvin temperature will the reaction proceed
while a metal was exposed to light at a frequency of 372x1015 s-1 electrons were emitted with a kinect energy of
a certain substance has a heat of vaporization of 6390 kjmol explain at what kelvin temperature will the vapor pressure
state the chemical equation for the acid base reaction between sodium hydroxide and tartaric
compute the charge on the nitrogen atom in the subsequent molecule there is a pair of non bonding electrons on
state the chemical equation for the acid base reaction between sodium hydroxide and ethylenediamine
modify isoleucine to illustrate the predominant form at ph 1 7 and 13 isoleucine has pka values of 24 carboxyl group
explain what is the volume that is occupied by an object having a density of 178 gcm3 and a mass of 125
the drawing shows two situations in which charges are placed on the x and y axes they are all located at the same
an extremely dense neutron with mass equal to that of the sun has a radius of about 10 km about the size of manhattan
a boat capable of making 60 kmh in still water is utilized to cross a river flowing at speed of 40 kmh the boat is
a 38-kg boy running at 37ms jumps tangentially onto a small circular merry-go-round of radius 20 m and rotational
two capacitor plates are equally and oppositely charged they are separated by 14cm an electron is released from rest at
the position of a particle is given in cm by x 8 cos9t where t is in seconds a discover the maximum speed b discover