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how many grams of lactic acid ch3chohcooh together with 200 grams of naoh must be used to prepare 225 ml of lactic
benzoic acid hc7h5o2 is a weak monoprotic acid 1081 g of sodium benzoate nac7h5o2 which is the conjugate base is placed
which of these would not be expected to form in even small amounts in the free-radical chlorination of methanea chcl3b
write the balanced reaction for the neutralization of acetic acid with sodium carbonate explain why co2 gas is
draw out the mechanism for the synthesis of aspirin but do not use the acid catalyst i understand that this is a green
an emission line from k atoms is found to have two closely spaced components one at 76670 nm and the other at 77011 nm
if a light wave has a wavelength of 528nm calculate the frequency of the wave and the energy of the wave in
calculate the ph at 25degc of an aqueous solution that is 0320 m in ethylamine and 0140 m in ammonia ie the solution
when 20 g of naoh are dissolved in 490 g of water the temperature increased 105 c what is the heat of dissolution of
a metal sample having a temperature of 100c and a mass of 452 g was placed in 50 g of water with a temperature of 26c
the metabolism of one mole of glycerol trioleate c51h93o6 a common fat producess 302210 kj of heat how many grams of
consider the titration of 800 ml of 0100 m baoh2 by 0400 m hcl calculate the ph of the resulting solution after the
a buffered solution is made by adding 500 g nh4cl to 100 l of a 075 m solution of nh3 calculate the ph of the final
how much heat is liberated when 5kg of coal is burned if the coal is 962 carbon by mass and the other materials in the
balance the following redox reaction if it occurs in acidic solution what are the coefficients in front of h2c2o4 and
what is the equation for conversion 4-methylcyclohexene into a mixture of 4 isomers of c7h12 using sulfuric
a gas absorbs 25 j of heat and then performs 131 j of work the change in internal energy of the gas
a horizontal force of 100 newtons is applied to a block having a mass of 10 kg the frictional force across the floor is
the isotope cesium 137 has a half life of 30 years cesium-137 is a produced in nuclear power plants we currently find
the specific heat of copper is 0092 calg oc show that the amount of heat needed to raise the temperature of a 10 gram
the ph of a household cleaning solution is 1164 this cleanser is an aqueous solution of ammonia with a density of 100
calculate the ph of a solution made up from 22 g of potassium hydroxide dissolved in 146 ml of 016 m perchloric acid
a buffer is made by dissolving 112 g of sodium dihydrogen phosphate nah2po4 and 177 g of disodium hydrogen phosphate
a buffer solution is prepared by mixing together equal quantities of formic acid hcho2 and sodium formate nacho2 write
1 the 1s--gt 2p transition in a hydrogen-like atom occurs at 100x106 cm-1a what is the ionization energy of this atom