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A student weighed a copper wire sample that was considerably larger than the size recommended in the procedure. The copper was dissolved and diluted to 50 mL as directed. The percent transmittance reading on the spectrophotometer was 0.0.
a) explain the significance of a percent transmittance reading of 0.0 in this situation.
b) could a percent transmittance reading of 0.00 be used in calculations? Briefly explain.
c) suggest a procedure that the student could follow to finish the experiment satisfactorily without weighing out a new sample of copper wire.
A second order reaction of the type A + B--> P was carried out in a solution that was initially .075 mol dm^-3 in A and .050 mol dm^-3 in B. After 1.0 h the concentration of A had fallen to .020mol dm^-3 a)Calculate the rate constant b)What is the..
A solution containing 3.47mM X (analyte) and 1.72 mM S (standard) gave peak areas of 3473 and 10222, respectively, in a chromatographic analysis. Then 1.00ml of 8.47mM S was added to 5.00ml of unknown X, and the mixture was diluted to 10.0ml. This..
what would you expect to see if you performed a benedits and fehlings tests on manosse and galactose?
Three manufacturers are producing carbonated bottled water. One company introduces carbonate by bubbling carbon dioxide into water until CT=10-3 M (equivalent to adding "H2CO3*" until CT = 1 x 10-3 M), a second adds sodium bicarbonate (NaHCO3) unt..
How many moles of CF4 can be produced when 5.00 mol C react with 8.00 mol F2?
Calculate the energy required to raise the temperature of 160.0 g Ag from 273 K to 295 K. Please provide answer in J
The lethal inhalation dose of sarin for a 200 pound person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
calculate the molarity of acid (or base) remaining in solution when 20mL of 0.400M HNO3 is added to 16.3mL of 0.258M NaOH?
Calculate the amounts of C 7 H 8 , C 7 H 16 , and H 2 in the output stream express your answer (in mol s -1 ).
how many grams of SO2 are required to treat 3.00x10^8 L of 0.0750 mM Cr(VI)? 2CrO4+3SO2+4H yields Cr2(SO4)3+2H2o
What is the lowest possible energy (in electron volts) of an electron in hydrogen if its orbital angular momentum is 2?
a buffer is prepared by combining 10.0 g of NaH2PO4 with 150 mL of 0.20 M NaOH and diluting to 2.0 L. what is the pH of the buffer? (Ka (H2PO4-)= 6.2 x 10^-8)
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