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Problem- Calculate the molarity of a solution made by adding 39.9 mL of concentrated perchloric acid (70.5 % by mass, density 1.67 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 2000 mL of solution. (It is important to add concentrated acid or base to water, rather than the other way, to minimize splashing and maximize safety.)
I need proficient help in the above problems.
How many moles of O2 would be required to react with 0.850 moles of CS2 in CS2(l) + O2(g) CO2(g) + SO2(g)?
The human eye is able to detect as little as 2.35 × 10-18 J of green light of wavelength 510 nm. Calculate the minimum number of photons of green light that can be detected by the human eye. Physical constants can be found here.
A 0.158 grams sample of this compound was dissolved in water, as well as an excess of sulfuric acid was added to form barium sulfate what is the mass of barium sulfate that was found to be0.124 grams as well as what is the formula of the original ..
Calculate the ph of a solution formed by mixing 100.0ml of .20 M HCLO with 200.0 ml of .30 M KCLO. the ka for HCLO is 2.9x10^-8
linear polystyrene has phenyl groups that are attached to alternate not adjacent carbons of the polymer chain
Problem- the typical energy differences for transitions in the microwave, IR, and electronic spectroscopies are 5x10^-22 J , 0.5x10^-19 and 1x10^-18 J. 1) Calculate the ratio of the number of molecules in two adjacent energy levels at 300 K in each..
Capital V will stand for Vbarr(molar volume) (P+(a/V^2))(V-b)=RT is the van der Waals equation and when it is solved for V you obtain cubic equation V^3-(b+(RT/P))V^2+(a/P)V-ab/P=0
calculate the partial pressures of the three gases remaining at the completion of the reaction if the total pressure
Explain an enzyme is inactivated by the addition of a substance to a solution containing the enzyme. Propose one way to determine whether the substance is a reversible or irreversible inhibitor.
1. assume that the smallest volume that youcan dispense is 1.0 ml and that you have 3.5 l of an inexpensivediluent. you
Question- Aluminum reacts with chlorine gas to form aluminum chloride. (a) Give the balanced equation for the reaction. (b) What is the maximum mass of aluminum chloride that can be formed when reacting 25.0 g of aluminum with 30.0 g of chlorine? ..
Calculate the equilibrium concentration of Cl2O(g) if 1.0 g of H2O(g) and 2.0 g of Cl2O(g) are mixed in a 1.0-liter flask.
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