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equal volume of 0220 m agno3 and 0140 m zncl2 solution are mixed calculate the equilibrium concentration of ag and
how many hydrogen atoms are in an unbranched alkene with one double bond and 3 carbon
1 ideal gasconsider n o2 molecules in a container of volume v at a pressure of p1 atm and atemperature of t298ka
the ammoniaammonium buffer system is used to optimize polymerase chain reactions pcr used in dna studies the
800times10-3mol of hbr are dissolved in water to make 140l of solution what is the concentration of hydroxide ionsoh-
chemists studied the formation of phosgene by sealing 081 atm of carbon monoxide and 137 atm of chlorine in a reactor
concentrated sulfuric acid is 98 by mass h2so4 with the remaining mass being water what is the molar concentration ie
an ammoniaammonium buffer solution contains 019m nh3 and 061m nh4 the kb value of ammonia is 18 x 10-5 calculate the
calculate go in j for 1 moles of electrons in each half-reaction and a standard potential of 027
a half-cell that consists of a copper wire in 100 m cuno3 solution is connected by a salt bridge to a half cell
use standard reduction potentials shown below to calculate the potential of a nickel-cadmium cell that uses a basic
air is 21 mole percent oxygen that is 021 atm oxygen at 1 atm suppose the ph of the water is 528 and that the
for the above current at 301 v how much electrical energy in kw-hr is consumed in the production of 1 kg of aluminum a
the electrolysis of molten a12o3 at 980 ordmc is used to produce metallic aluminum a current of 777 a is used in the
a 704 g ice cube floats in the arctic sea the temperature and pressure of the system and surroundings are at 1 atm and
the solvay process is an industrial method for preparing baking soda in the process co2 nh3 h2o and nacl react to
a nuclear power plant operating at 400 efficiency produces 1122 mw of usable power in 100 year and consumes 115times106
potassium metal reacts with water to give potassium hydrozide and hydrogen gas if 500 ml of hydrogen gas is produced at
solid potassium nitrate is decomposed by heating to give potassium nitrite and oxygen gas if 100g of potassium nitrate
a 1750-g sample containing potassium hydrogen carbonate is decomposed by heating if the mass loss is 0271g what is the
the average human body contains 500 l of blood with a fe2 concentration of 140x10-5 m if a person ingests 700ml of 1100
fumaric acid is an organic substance widely used as a food additive its elemental composition is 414 c 35h and 551 o
the boiling point of a liquid increases as the pressure above the liquid increases in contrast to boiling food in an
a gas has a percent composition by mass of 757 carbon and 143 hydrogen at stp the density of the gas is 250 gl what is
how many moles of h2 gas should be taken up by 1 octene in the course of this reaction what volume does this correspond