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Problem- 1. A concentration of 96.0% of w/w H2SO4 solution has a density of
1) 8g/mL. Determine molarity.
2) Describe how to prepare a 5.0% w/v solution of sodium of sodium chloride.
3) All grain contains an acceptable amount of rat hairs. If 40 rat hairs weighing 1.5X10^-4 g each were found in a 1.00kg sample of grain, what is the content of rat hairs in that sample expressed in ppm?
4) The concentration of lead in an industrail waste stream is 0.28 ppm. What is molar concentration?
5) A 250.0mL aqueous solution contains 45.1 micrograms of pesticide.
Express the pesticide's concentration in weight percent, parts per million, and parts per billion.
which catalysts are used for the polymerization of tetraflouroethene to form teflon? and for the polymerization of
If you mix 50mL of each of the above solutions with 300mL of water, explain what is the concentration of each new reagent
Problem- A student mixes 45.0 mL of 3.32 M Pb(NO3)2(aq) with 20.0 mL of 0.00245 M Na2C2O4(aq). How many moles of PbC2O4(s) precipitate from the resulting solution. What are the values of [Pb2 ], [C2O42-], [NO3-], and [Na ] after the solution has r..
Specify the organic solvent and aqueous solutions to be used for the separation. Provide the exact acid-base reaction that occurs during each step of the separation
What is the overall mass-transfer coefficient for oxygen (O2) from the atmosphere to the river (b) Which part of the transfer mechanism controls the overall rate
How many joules of heat are lost by 3473 kg granite as it cools from 41.1°C to -13.1°C?
A solution is prepared by mixing 50.0 mL of 0.11 M Pb(NO3)2 with 50.0 mL of 1.3 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6* 10-5.
The following data was recorded. Solution: Relative Fluorescence A (standard oxidized) 62.4 B (standard, blank) 7.0 C (sample, oxidized) 52.0 D( sample, blank) 8.0 Calculate the vitamin B1 content of the pork in terms of micrograms per gram.
What happens to the pressure inside a closed container if the number of moles inside the container is increased while the temperature is maintained constant
Explain what are the irreducible representations of these two RRs? (c) Based on your analysis above as well as considering the experimental spectrum which of these two geometries is most likely
Calculate the expectation value for the kinetic energy of the H atom with the electron in 2s orbital. Compare your result with total energy
An insulated tank is divided into two equal parts. Both halves contain the same ideal gas but one is at 300K and 2 bar while the other one is at 1 bar.
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