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How do you calculate/what formula(s) do you use when calculating the mass of solute/solvent in a given solution, determine final molarity after several dilutions, convert molarity to mass percentage, and ppm concentration?
Why can you not distinguish between an aldehyde and a ketone using only the 2,4-dinitrophenylhydrazine reagent?
Assume that liquid water forms item 5. Write a formula equation for the reaction that shows the physical states of all compounds?
What is the approximate amount of heat (in J) involved in the dissolution of the KCl, assuming the heat capacity of the resulting solution is 4.18 J/g°C?
Why does B2H6 not have the same kind of structure as C2H6. Draw the structure that B2H6 does have and describe the nature of the two sorts of BH bonds therein.
the recommended daily dietary intake of calcium for adult men and pre-menopausal women is 1100 mgday calcium citrate
At 50°C the vapor pressure of ethanol is 0.30 atm, acetic acid is 0.08 atm, water is 0.12 atm, and acetone is 0.84 atm. A) Arrange these substances in order of increasing rates of evaporation.
How do you tell zeroth, first, and second orders apart graphically? Like how zeroth is supposed to be linear. Also what are their relationships for consumption and disappearance on the graph
Explain Oxidation of Elements and Their Reactions, Which element is oxidized and which element is reduced in each of the following reactions?
Consider a mixture of potassium chloride and potassium nitrate that is 43.2% potassium by mass. What is the percent KCL by mass of the original mixture?
Which solution has highest pH? A. 15 mM formic acid (Ka = 1.77 × 10-4) B. 15 mM Acetic acid (Ka = 1.74 × 10-5) C. 15 mM MES (Ka = 7.06 × 10-7) D. 15 mM NaH2PO4 (Ka = 6.2 × 10-8) E. 15 mM Tris-hydroxymethyl aminomethane (Ka = 8.32 × 10-9)
Initial: CaCl2•2H2O (g) 1 gram Initial: CaCl2•2H2O (moles) .0068 moles Initial: CaCl2 (moles) .009 moles Initial: Na2CO3 (moles) .0068 Initial
Using the Nernst equation calculate the cell voltage for: Fe(s) + Cd2+(aq) ? Fe2+(aq) + Cd(s) when the [Fe2+] = 0.17 M and [Cd2+] = 1.1 M. Potentially useful information: Fe2+ + 2e
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