Determine width of frame if photograph is surrounded by it
A 5 in. by 7 in. photograph is surrounded by the frame of uniform width. Area of frame equals area of photograph. Determine width of frame.
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Pure benzene freezes at 5.48oC and its Kf value is 5.12oC/m. Find out the molecular weight of the compound? The freezing point of a solution of 5.884 g of an unknown non-electrolyte dissolved in 45.12 g of benzene is1.51oC.
Determine the numbers of grams of iron can be plated out at the cathode if a solution of FeSO4 is electrolyzed by a current of 1.00amp for the 30.0 minutes?
How can compare the wavelengths of an electron which is having the mass = 9.11*10^-31 kg and a proton which is having mass = 1.67*10^-27 kg, each have (a) a speed of 3.4*10^6 m/s ; (b) a kinetic energy of 2.7*10^-15 J.
The strontium-90 deposited in the hot desert will undergo the radioactive decay more rapidly because it will be exposed to much higher average temperature. Explain is this a reasonable suggestion?
In a GC determination of tetra-ethyl lead (TEP b), an injection which is having 1.0 :g/l of TEP b and 0.40 :g/l of nonane, used as an internal standard, gives a peak area ratio of the 3.6 (TEPb over nonane).
Endure All, a manufacturer of batteries claims that lifetime of their batteries is basically distributed with mean of 500 hours and standard deviation of 40 hours. Determine the probability that Endure All battery chosen at random will last more t
The peak width of peak A is 0.18 minutes. In a GC analysis, a pair of analytic A and B have retention times of 3.93 and 4.12 minutes, respectively, on a column with tm = 0.97 minutes.
Discuss how do you add the OH which is meta to the butyl group? Can it be through a benzene intermediate with the NaOH,H20, H30 as reactants once you've done Friedel-Crafts acieration which is followed by the chlorination?
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