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a student finds that 2496g of water at 249 ordmc density 09971 gcm3 is required to completely fill an empty flask the
in class i described the methods used to create gas and gasoline from the carbon in coal the other ingredients were
a bird is flying around the world at a rate of 256ftmin how many weeks will it take to compete its journey if the
1 potassium metal is very reactive with liquid bromine the result of the reaction is the formation of a white ionic
1 why is it unlikely for magnesium to form a cation with a charge of 12 how can you tell whether disilicon hexabromide
how much work energy must you do to lift 1 tonne 1000 kg of coal from a depth of 500 m to the surface what fraction of
a good sample of benzoic acid melts at 121-122 degrees celsius however a student had a sample that melted over a range
a sample of a compound is decomposed in the laboratory and produces 330nbspg carbon 695nbspg hydrogen and 2202nbspg
combustion analysis of a hydrocarbon produces 3301 g co2 and 2703 g h 2ocalculate the empirical formula of the
what is the density of a piece of solid that weighs 675 grams and displaces 348 ml of water remember density is a
what are the possible products when solutions of kbr and srno32 are mixed and what is the identity of the
calculate the standard gibbs free energy change and the equilibrium constant for the oxidation of a formate ion to
how do you calculate the number of peaks and mass when bromine with two isotopes and phosphate with one isotope are put
two one-cent coins were weighed on an electronic balance of high sensitivity and an average mass per coin of 24918 g
a 0l m solution of acetic acidch3cooh causes a bulb to glow bright as 0001 m solution of hbr explain hint think about
calculate the energy of one photon of blue light that has a wavelenght of 425 nm and red light that has a wavelenght of
determine the molar volume of co2 at 400 k and 100 atm using the van der waals equation with a 3592 l2atm mol-2 and b
1 the lab manual instructs you to heat camphor at position 2 on the hot plate which is a moderately low setting what
suppose the sulfur content of a mineral sample is determined by complete conversion to ag2sswhat mass of sample must be
develop a hypothesis that could explain why a soap created from the acid ch3ch2ch2ch2cooh has poorer cleaning
koh aq cuno32 aq precipitatekbr aq srno32 aq no precipitatea what are the possible products when solutions of koh
you isolate an acidic compound by suction filtration and think it is still wet how do you remove the remaining water
determine the percentage of mass of the atmosphere that resides between sea level and a height of 183 km assume an
determine the mass of the water by using the waters density specific to the initial temperature and the volume of the
calculate the thinkness of the monolayer assuming that the volume of the monolayer is 739times10-6 ml and diameter of