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what is the mass percent composition of oxygen in a compound having the empirical formula
sucrose c12h22o11 can be mixed with potassium nitrate to form an amateur rocket propellant called rocket candy which
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draw the structural formula for 256-trimethylnonane 3-propyl-45-dimethylheptane and 1-ethyl-3-methycyclohexane i dont
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you are asked to create a stock solution of sodium chloride by dissolving 117g of solid to create 200 ml of solution
a standard solution of 0243 m naoh was used to determine the concentration of a hydrochloric acid solution if 4633 ml
a sample of gas occupies a volume of 537 ml at 0776 atm and 79 oc calculate the temperature of the gas if its volume is
suppose a 10 ml sample of solution is to be tested for cl- by adding 2 ml of 15 m agno3 what is the minimum number of
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a sample of gas occupies a volume of 459 ml at 0736 atm and 29 degrees celsius calculate the volume of the gas if its
in 2008 chinas tainted milk scandal spreaded around the world this major issue is caused by the melamine-contaminated
outline the steps involved in basifying and extracting caffeine from 20 ml of tea using 2 x 60 ml dichloromethane
hydrochloric acid can dissolve calcium carbonate predict the balanced chemical reaction how much hcl is required to
suppose that 2265 ml of a 002024 m permanganate solution kmno4 was needed to react with the fe2 in a sample that had a
suppose that 3555 ml of permanganate solution kmno4 is required to titrate 12055 grams of ironii ammonium sulfate
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list all possible term symbols of allowed excited states for an atom with a ground state term symbol of 3d1co2 has a
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two flasks are connected with a stopclock the first flask has a volume of 5 liters and contains nitrogen gas at a
a ground state hydrogen atom n1 absorbs a nm photon what is the new value of n 2 the excited state atom drops down to
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