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calculate the ph of 100 ml of 028 m nh3 before and after the addition of 45 g of nh4no3 and account for the change
an infinitely long line of charge has a linear charge density of 500times1012 cm a proton is at distance 120 cm from
a thermometer containing 95 of mercury has broken if mercury has a density of 136 what volume
while an elevator of mass 832 kg moves downward the tension in the supporting cable is a constant 7730 n between t 0
in hexaphenylbenzene synthesis using tetraphenylcyclopentadiene and diphenylacetylene what volume of carbon monoxide
suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly nine months as
at a ph of 4 the cu-neocuproine complex formed in the liquid-liquid extraction experiment has a partition coefficient
how many non-bonding valence electrons are there in a molecule of citric acid please show how to calculatecount them
a bird is launched at a speed of 25 meters per second at an angle of 29deg to horizontal from a height of 13m above the
the ionization energy of co is greater than that of no explain this difference based on the elctron configuration of
write a mechanism for the formation of n-2 4-dinitrophenyl aniline via nucleophilic aromatic substitution show all
an electron and a positron have masses of 911 10-31 kg they collide and both vanish with only electromagnetic radiation
two flexible balls rolling along a frictionless horizontal surface collide with each other the larger of the balls
1calculate the millimoles of sodium hypochlorite used in the reaction 23ml of a 525 solution clorox compare this value
a diffraction grating 230 mm wide has 5780 rulingscalculate the distance d between adjacent rulingsfind the angle at
1 calculate the millimoles of sodium hypochlorite used in the reaction 23ml of a 525 solution clorox compare this value
a target glider whose mass m2 is 340 g is at rest on an air track a distance d 53 cm from the end of the track a
if a given element has a mass that is 581 times that oc 12 c how do i figure out the mass and the element do i just
an unknown gas is held in 2 separate containers with identical number of moles of gas the volume of container 2 is 0347
suppose that the reaction a---gt products is exothermic and has an activation barrier of 75kjmol sketch an energy
using the definition of the gibbs free energy it is possible to state the general inequality for equilibrium and
a 100-g solid sample containing a mixture of nacl and h3c6h5o7 a triprotic acid is dissolved in 15 ml of water
the energy required to dissociate the h2 molecule to h atoms is 432 kjmol h2 if the dissociation of an h2 molecule were
the energy of a photo is 316 times 10-19j what is the wavelength of the corresponding light what is the color of this