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a sound source normal frequency of 1000 hz approaches a stationary observer at one-half the speed of sound the observer
a block of aluminium at 0c of mass of 500 g is dropped into an insulated container of water at 80c if the water
explain what is the energy of the photon that is emitted when the state of an electron changes from n4 to n2 in a
state the second period elements that are lithium through neon in order of increasing first ionization
1 bromo butane 1 bromo 2 methylpropane or 1 bromo 2 2 dimethylpropane all of these are primary halides explain why is
as an alternative of t-butyl alcohol what other compounds can be used to form1 4-di-t-butyl-2
2so4 02 ---gt 2so3the kp013 at 830c200 mol of so2 and o2explain what must the total pressure at equilibrium be in
explain under what conditions can liquid co2 exist be specific can it exist as a liquid at normal room
if water drips from a faucet at a rate of one drop per second explain how many liters could be collected after ten
explain how many electrons are necessary to produce a charge of -13c explain what is the mass of the many
niobium has an atomic radius of 0143 nm as well as a density of 857gcm3 find out whether it has an fcc or bcc crystal
1 mol of sand grains would cover the state of texas to several feet approximate to how many feet assuming the sand
oxalic acid crystals take place as h2c2o42h2o compute the concentration of oxalic acid in the solution in gl titrated
state a balanced net ionic equation for the reaction between lead nitrate and sodium sulfate in solution explain how
the sun is 93 million miles from earth explain how many minutes does it take for light to travel from the sun to the
explain how many grams of alclo43mm326 gmol must be added to 365 g of water to make a solution with a colligative
explain the explosive tnt is composed of 370 carbon 220 hydrogen185 nitrogen and 423 oxygena find out he empirical
butylated hydroxytoluene bht is utilized as an antioxidant in processed foods it prevents fats as well as oils from
hexacoordinate fe ii in heme is bright red pentacoordinate fe ii is blue define how these electronic changes account
explain the hydrate of sodium carbonate contains 629 water by mass utilize this value to verify the chemical formula of
terephthalic acid is a significant chemical used in the manufacture of polyesters and plasticizers it contains only c h
butylated hydroxytoluene bht is utilized as an antioxidant in processed foods it prevents fats and oils from becoming
compute the number of liters of oxygen gas required to produce150 liters of dinitrogen trioxide assume all gases are at
if 40 pound bag of topsoil that will cover ten square feet of ground at a depth of one inch explain how many bags are
a cyclohexane has a freezing point of 650 and a of 200 explain what is the freezing point of a solution made by