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freezing point of nbsppure 2-methyl-2propanol is 255 degree celsius however it absorbs h2o when it on exposed to humid air determine how many
the density of a given solid and liquid k are 9926 kg m-3 and 9334 kg m-3of molar mass 1472 gmol at its normal melting temperature of 37254
a calorimeter contains 270 grams of h2o at the temperature of 145 degree celsius when 140 grams of a substance that has a molar mass 460 is mixed it
530 ml of 150 m solution is diluted to a volume of 268 ml determine the final concentration if a 134 ml portion of that solution is diluted using
a piece of 122 grams metal with is placed in a 50 ml graduated cylinder determine what would be the density of the metal if water level rises from 20
determine what concentration of oh - is needed to dissolve 0015 mol ofnbspznoh2 zinc hydroxide in a liter of solution if it is given that the
you have a bleach solution of 19043 grams determine how many grams of naocl are in the solution if the percent by mass of the solute sodium
a sample of oxygen gas o2 is collected over water h2o at 25 0c temperature and a total pressure of 654 torr the volume of the gas collected 500 ml
nbspwhen sodium chloride nacl reacts with silver nitrateagno3 silver chloride precipitates determine the mass of silver chloride is produced from 750
considering the given equation as cac2s2h2ol c2h2gcaoh2aq nbspin which acetylene gas c2h2 is produced a determine how many moles of water are needed
what is the average speed of the sprinter if a sprinter set a high school record in track and field running 200 m in 220s express your answer in
determine how much water is formed if 30000 grams of c2h2 acetylene burns completelydetermine how much heat energy is needed to convert 640 grams of
consider the composition of dry air in 0 humidity is just about 21 o2 78 n2 and 1 argon by moles compute the density of dry air and molar mass at
a graduate cylinder contains water of 155 ml a piece of iron of 150 g and density 786 cm3 and a piece of lead of 200 rams and density 113 gcm3 are
if argon of 0214 mol nbspoccupies 652 ml determine the volume of 0375 mol of c4h10 gas under the same temperature and pressure conditionsarrange the
determinenbsp the energy in joules of a mole of photons coupled with red light of wavelength 700 acute 102 nm c 30 x 108ms h 663 x 10-34 j s na
a student placed glucose of 105g in a volumetric flaskmixed enough h2o to mix the glucose by swirling and mixed additional amount of h2ountil nbspit
determine the molarity of a solution of twenty grams of ammonium bromide nh4br in enough water to produce 132 ml of solution quininehydrochlorid
radiation with a 584 nm of wavelength interacts with a h2hydrogen atomand induces the ejection of an electron then determine the kinetic energy of
if a sample of the compound contains 0273 mol a 0410 mol b and 0546 mol c then determine the formula of a compoundconsidering the given equation as 2
a half-life of phosphorus-32 140 days starting with six grams nbspof 32p determine how many grams would remain after 112 daysthe following reaction
a 180 m solution of 56 ml is diluted to a volume of 218 milliliters a portion of that solution of 109 milliliters is diluted using 149 milliliters of
a flask of one litre is filled with 130 grams of argon gas at the temperature ofnbsp 25 degrees celsius a sample of ethane c2h6 vapor is combined to
compute the average rate of decomposition of h2o2 hydrogen peroxide between 0 and 216x104s estimate the average rate of production using this rate of
considering this given equation ch4 g 3 cl2 g- chcl3 g 3 hcl g determine how many grams of methane is required to form nbsp430 grams of