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a 3516 g piece of copper which has a molar heat capacity of 2447 jc mol is heated to 808 degrees celcius and dropped
helium gas at constant pressure of 74 atm expands in volume from 213 l to 792 l the temperature is held at 278 k
what are the oxidation number of the central atom of the following species please explain how to do
for the following precipitation reactions calculate how many grams of the first reactant are necessary to completely
hard water often contains dissolved ca2 and mg2 ions one way to soften water is to add phosphates the phosphate ion
a hydrogen atom initially in the ground state absorbs a photon which excites it to the 400 statedetermine the
two acids each approximately 001 m in concentration are titrated separately with a strong base the acids show the
an ideal monatomic gas is contained in a vessel of constant volume 0270 m3 the initial temperature and pressure of the
how do i write the chemical equations to the following descriptions the answers are already known i just need
a sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area 0300
a 101 ml sample of vinegar which is an aqueous solution of acetic acid hc2h3o2 requires 162 ml of 0474 m naoh to reach
please do not respond to this post as this is a duplicate post the same question has been posted twice by mistake and
the photoelectric threshold wavelength of a tungsten surface is 272 calculate the maximum kinetic energy in of the
which of the following processes is necessarily driven by an increase in the entropy of the surroundingsthe
when a certain air-filled parallel-plate capacitor is connected across a battery it acquires a charge of 200 microc on
although aluminium chloride is ionic in the solid state it is molecular in the gaseous state write the lewis structure
in a certain oscillating lc circuit the total energy is converted from electric energy in the capacitor to magnetic
write the lewis structure prepare a vsepr sketch describe the geometry prepare a vb sketch and describe teh bonding in
two capacitors give an equivalent capacitance of 950 pf when connected in parallel and an equivalent capacitance of 180
a model of a red blood cell portrays the cell as a spherical capacitor a positively charged liquid sphere of surface
1 determine the molecular geometries of the following moleculesch2cl2cl2o2 how many unpaired electrons are there in the
assume you dissolve 0279 g of the weak acid benzoic acid c6h5co2h in enough water to make 191 102 ml of solution and
given the equilibrium constant kp of 240 x 10-3 at 1000 k for n2g 3h2g equation 2nh3g what is the equilibrium constant
hydrogen chloride reacts with oxygen to yield chlorine and water an equilibrium can be established with this reaction
a particle of charge 12 uc and mass 38 x 10-5 kg is released from rest in a region where there is a constant electric