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A 20.00mL sample of H3Y was titrated with 0.1000 M NaOH. The first equivalence point was reached after the addition of 14.98mL of base. The second equivalence point was reached after the addition of 30.03mL. Find two values for molarity of H3Y in the original sample which came to be 0.0249 M and 0.050 M. Find the initial pH of the solution of H3Y?
Determine the enthalpy change if The heat released when 24.9 grams of Potassium K reacts with excess H2O water is 124 kilo joules?
Find ratio of the atomic mass of Silicon to Hydrogen if every 100g of SiH4 contains 87.45g of Si and 12.55g of H.
Write the electron configuration of selenium. List the following compounds in order of increasing lattice energy: NaCl, NaBr, MgO, CaO.
In the bromination of ethane (C2H6) reaction, one wants to produce 10.0 g of C2H5Br product. How many grams of C2H6 would be needed to react with excess Br2.
2SO2(g) + O2(g) 2SO3(g) Suppose the volume of this system is compressed to one-half its initial volume and then equilibrium is reestablished.
A nugget of pure gold of 4.90 grams absorbed heat of 270 Joules. determine the final temperature of the Au if the initial temperature = 22.0°C? specific heat of Au =0.129 J/(g·°C).
Question : Explain and show how you would sythesise the following compounds, starting with benzene or toluene and any necessary acyclic reagents. Assume para is the major product.
How many carbon dioxide in kilograms is produced upon the complete combustion of 18.9 L of propane(Many home barbecues are fueled with propane gas
How much of a 6.0 M sucrose solution should be used to make 79.0 mL of a 0.055 M solution.
The standard cell potential of the zinc-air battery is 1.65V. If at 25 dgrees celsius the partial pressure of oxygen in the air diffusing through its cathode is 0.21 atm.
I need assistance with a project concerning demographic transition, which is little confusing to me. I am really concerned with this class as I have a failing grade
Given the equilibrium pH will you have successfully reduced each metal ion level to below the MLC? give detailed calculations to support your answer.
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