How can you combine standard addition and internal standard techniques in an HPLC experiment?

When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of OH- will be??

CN-(aq) + MnO4-(aq) --> CNO-(aq) + MnO2(s)

Resonance results in a weaker base and a weaker nucleophile?

suppose you had a mixture of silver iodide, potassium nitrate, ethyl alcohol, and water. if you wanted to recover each of the compenents in pure form, which methods: decantation after sedimentation, decantation after centrifugation, or filtration would you use? Explain how you would carry out this separation and recovery, indicating exactly what components you have at each step of procedure.

Which one of these salts will form a basic solution on dissolving in water?

A. NaCl

B. KCN

C. NaNO₃

D. NH₄NO₃

E. FeCl₃

Please, I need to get this right. No one is yet to get it right, it has been answered on Chegg but is wrong

In a psychrometric process, Volume of a classroom = 300 m^3. and temperature in the room is T= 20 oC, P=100 kPa relative humidity = 50%

if all the water vapor of air in the room is converted to liquid at the same temperature, what is the volume of the liquid water (mL).

I believe the Volume of water vapor should equal volume of air and equal volume of the room, since its an enclosure. I also know that the volume is going to decrease if water vapor is completely converted to liquid water. How is this calculation done to get the right volume of liquid water

Kindly help with this.

Explain why temperature has an effect on reaction rate.

Explain why concentration has an effect on reaction rate.

The average human body contains 6.50 L of blood with a Fe2+ concentration of 2.50×10^−5 M . If a person ingests 12.0 mL of 17.0 mM NaCN, what percentage of iron(II) in the blood would be sequestered by the cyanide ion?

For example, the iron(II) ion, Fe2+Fe2+, can combine with the cyanide ion, CN−CN−, to form the complex [Fe(CN)6]4−[Fe(CN)6]4− according to the equation

Fe2+(aq)+6CN−(aq)⇌[Fe(CN)6]4−(aq)Fe2+(aq)+6CN−(aq)⇌[Fe(CN)6]4−(aq)

where Kf=4.21×10^45

This reaction is what makes cyanide so toxic to human beings and other animals. The cyanide ion binds to the iron that red blood cells use to carry oxygen around the body, thus interfering with the blood's ability to deliver oxygen to the tissues. It is this toxicity that has made the use of cyanide in gold mining controversial. Most states now ban the use of cyanide in leaching gold out of low-grade ore.

This experiment involves testing protein stability in a variety of solutions. Describe the effect you suspect each will have on the protein’s environment (ex: increases pH, competes for hydrogen bonds, increases hydrophobicity, etc.) and predict whether or not the protein will remain folded. Look up the structures of any chemical you are not familiar with.

• Sodium phosphate buffer
• DI Water
• NaCl
• Soap Solution
• NaOH
• HCl
• Urea
• Acetone

A typical aspirin tablet contains 319 mg acetylsalicylic acid. Calculate the pH of a solution that is prepared by dissolving two aspirin tablets in enough water to make one cup (249 mL) of solution. Assume the aspirin tablets are pure acetylsalicylic acid, Ka=3.3x10^-4.

Why is AgNO3/ethanol especially suitable for comparing the relative reactivity of various alkyl halides toward SN1 reactions? Comment on the nature of the nucleophile, the nature of the solvent and the ease with which the occurrence of reaction can be detected

Why was Cu prepared from a pure metal? Why was Ca prepared from a salt? Why is CaCO₃ a better salt for this purpose than CaCl₂?

an unkown hydrocarbon contain carbon hydrogen and oxygen combustion of 1.6 g of the hydrocarbon produces 1.0286 g h2o and 3.7681 g co2. what is the empiral formula of this compound?

Urea,NH2CONH2, is manufactured from ammonia and carbon dioxide according to the following equation: 2 NH3(g) +CO2 (g) ->NH2CONH2 (aq)+H2O (l)

What volume of ammonia gas at 25 o C and 1.5 atm is needed to make 1500g of urea?

Please explain!

A solution containing 87.32g of dissolved mercury (III) nitrate is mixed with a solution containing 34.62g of dissolved sodium sulfate. A chemical reaction occurs, and a precipitate is produced. How many grams of solid are produced from the reaction and how many grams of excess reactant remain after the reaction is complete?