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what volume of chlorine gas at 250 ordmc and 855 mm hg pressure is required to react with 840 g of phosphorus as given
a branch is wedged under a rock and rests on a small object the small object is 15 m from the large rock and the branch
how many faradays of electricity are required to produce 084l of o2 at exactly 1 atm and 25 degrees celcius from
a river 982 m wide flows toward the south at 358 mmin a girl on the west bank wishes to reach the east bank in the
sodium has a density of 0968gcm3 and crystallizes with the body-centered cubic unit cell calculate the radius of a
1 which of the following proceeds with syn addition a hydroboration of an alkene b hydrobromination of an alkene c
suppose 128 ml of 0429 m mgcl2 is mixed with 142 ml of 0279 m naoh and allowed to react completely volume change at
part a an x-ray beam with wavelength 0270nm is directed at a crystal as the angle of incidence increases you observe
a mixture is prepared by adding 227 ml of 0157 m na3po4 to 312 ml of 0277 m cano32 a what mass of ca3po42 will be
an electron is in the fifth bohr orbit of hydrogen find the speed of the electronfind the time required for the
calculate the sodium ion concentration when 800 ml of 32 m sodium carbonate is added to 250 ml of 23 m sodium
the ballistic pendulum is a device used to measure the speed of a projectile such as a bullet the projectile of mass 5g
a test tube contains 256 10-4 m3 of liquid carbon tetrachloride at a temperature of 755deg c the test tube and the
nickel crystallizes with the face-centered cubic unit cell the radius of a nickel atom is 124pm edge length351 pm
calculate the molarity and mole fraction of a 151 m solution of acetone ch3coch3 dissolved in ethanol c2h5oh density of
the coefficient of friction is 03 the initial speed is 3 ms how far does it slide down along the path before it comes
the wavelength is 6100 angstrom and the stopping potential is 05ev calculate the photon energyev and work
the star mizar in ursa major is a binary system of stars of nearly equal magnitudes assume the angular separation
use the values from the table of reduction potentials on the last page to determine gordm and keq for the reaction as
which of the following mz values is the molecular ion for 2-butanone a 15 b 29 c 43 d 57 e
which of the following statements are true of real gases 1 the individual gas particles have no volume 2 the particles
what is the balanced net ionic equation 2nh4cl aq baoh2 aq --gt 2h2o l bacl2 aq 2nh3
which of the following statements is true about a molecular ion a it is a compound that lost a pair of electrons b it
a specific steroid has max 213 nm and molar absorptivity 11500 what is the concentration of the compound in a
light of wavelength 400 nm is incident normally on a film of water 10 microm thick the index of refraction of water is