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the half-life of thallium-201 is 729 hours how many milligrams of a 779 milligram sample of thallium-201 will be lost
you need to prepare a 10 ml solution for injection that contains 75-mgml of the antibiotic kanamycin you have a 350
calculate the molarity of a solution that contains 0500 mol of agno3 dissolved in 250 ml of
a solution contains 1865 grams of kcl in 1000 ml of solution what is the molarity of the
calculate the molarity of a solution that has a volume of 025 dm3 and contains 106 g of
calculate the ph of the solution that results from the addition of 0040 moles of hno3 to a buffer made by combining
how many grams of water are needed to make 10000g of a 723 sodium
in a normal phase partition column a solute was found to have a retention time of 291 min while an unretained solute
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go through these synthesis problems and just need to develop a few general strategies for each of these moleculesyour
1 a 100-kg box on the right and a 45-kg box on the left are tied together by a horizontal cable the 100-kg box is acted
because gasoline is less dense than water drums containing gasoline will float in water suppose a 210-l steel drum is
how are methanol and ethanol similar in chemical and physical properties and how are they different which one is used
refractionsunlight strikes the surface of a lake at an angle of incidence of 30o at what angle with respect to the
polarizationa beam of unpolarized light is sent through two polarizing sheets placed one on top of the other what must
pair productiona gammaray interacts with the strong electric field of a nucleus and undergoes pair production the
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industrial buildings have fresh air requirements depending on the occupancy level and its function assume 15000 cfm of
in the following reactionnbspmg 2hclnbsprarr mgcl2nbsp h2how many liters of h2nbspwould be produced if you started
do you think there is a point at which volume cannot be decreased any further for this sealed container of gas explain
1 our lab for this unit investigated factors that influence the speed at which solute dissolvesnbspthe speed of
bottled water consumption was reported to be 290 gallons per person in the us in 2007 this is equivalent to how many
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how is pmma material made into an acrylic heel describe process from start to finish using pmma
draw the mechanism of witting reaction betweennbspethylidene triphenylphosphorane