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75.0 g of ammonium sulfate is placed in a 500.0 ml flask and diluted volume.
1) What is the percent by mass concentration of this solution? (assume the solution density is 1.00 g/ml)
2) What is the molarity of the solution?
3) How many moles of ions are present in the flask?
Under what circumstance is the rate law related directly to the balanced equation for a reaction
Which choice correctly describes the electron pairs in the valence shell of the central atom in a molecule of Cl2O?
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)?
Can anyone help me with the reaction sequence AND stepwise mechanism for the mono-nitration of phenyl methyl ketone
Write the chemical equation for the following reaction: Add 1mL of 6M HCl to 1mL of 0.5M Na2SO4. Add a few drops of 1M BaCl2. How do your incorporate the BaCl1 into the chemical equation
Calculate the pH in the solution formed by adding 10.0 mL of 0.100 M HCl to 20.0 mL of 0.100 M NH3
Calculate the overall energy change in kilojoules per mole for the formation of CaCL(s) from the elements. The following data are needed: (a) Eea for CL(g) = -348.6kj/mol. (b) Ei1 for Ca(g) = +589.8kj/mol. (c) Ei2 for Ca(g) = +1145kj/mol.
Choose the selection which correctly characterizes all three of the following substances in terms of whether they are polar or nonpolar: CS2 and XeF2 and GeH4 a) CS2 is polar and XeF2 is nonpolar and GeH4 is nonpolar.
Presence of Aldehyde Group, An excellent way to identify the presence of an aldehyde group is by 1H NMR. The chemical shift of the aldehydic proton occurs in the 9-10-ppm region
1. What is the ph of a solution that results from adding 250 ml of .50 m naoh to 750 ml of .50 m hf? 2. What is the ph of a buffer composed of .035 m h2po4 and .65 m hpo4?
A reaction has a first order rate constant of 4.31x10-5 s-1 at 25oC and 0.00111 s-1 at 65oC. What is the value of the rate constant at 43oC
Sodium hydroxide comes in a pellet form in bottles from laboratory supply companies but it cannot be used as a primary standard. Why not
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