Calculate the amount of solution (g or mL) that contains each of the following amounts of solute.

5.2 g of LiNO3 from a 35 %(m/m) LiNO3 solution.

31.6 g of KOH from a 20.0 %(m/m) KOH solution.

3.1 mL of formic acid from a 18 %(v/v) formic acid solution.

Thermodynamics of potassium nitrate dissolving in water experiment post-lab questions: What does the sign of the delta G tell you about the dissolution process for this experiment? Is the dissolution process spontaneous at all temperature? If not at what temperature does this spontaneity change?

Why does the Doppler effect lead to a shift in the atomic emission frequencies of hydrogen atoms in a star but a broadening of the atomic emission frequencies of hydrogen atoms in a gas?

When the following equation is balanced properly under acidic conditions, what are the coefficients of the species shown? 2 Fe + MnO4- 2 Fe2+ + Mn2+ Water appears in the balanced equation as a product (reactant, product, neither) with a coefficient of 2 . (Enter 0 for neither.) How many electrons are transferred in this reaction?

Describe briefly (4-6 sentences) what factors are responsible for influencing what face of a π-system in a chiral environment a reagent will attack from.

If the hydrolysis to the diacid is not complete, how could you separate the desired diacid from the unhydrolyzed anhydride by extraction?

You carry out a reaction starting with 200 mg of cyclopentadiene and 300 mg of maleic anhydride and 375 mg of the cycloadduct anhydride is obtained. Calculate the % yield for the anhydride. Show your calculation.

Calculate the freezing point of two aqueous solutions, one containing 15% magnesium chloride by weight, the other 15% ethyl alcohol (CH3CH2OH) by weight. show all calculations

The Ka of benzoic acid is 6.5 x 10 ^(-5)

a) Calculate the pH of a 40.00 mL, 0.1 M benzoic acid buffer solution after the addition of 20.00 mL of a 0.1M NaOH

b) Calculate the pH of a 40.00 mL, 0.1 M benzoic acid buffer solution after the addition of 50.00 mL of a 0.1M NaOH

REDOX TITRATION

2) Express the reactions for potassium permanganate titration with sodium oxalate: Hint: include the 2 half-reactions.

3) What is the percent oxalate in a 1.723 g sample if 31.10 mL of 0.019M permanganate solution is required for titration?  

: carbonyl(CO) is strong field ligand so [Ni(CO)4] should have square planar shape but by the experiment [Ni(CO)4] is tetrahedral.Explain this statement.

How may grams of solute are needed to prepare the following solutions?

1.000L of 240.0M NaCl

250.0 mL of 0.135 M CuSO4

500.0 mL of 0.370 M CH3OH

Also, please tell how you got answers so I can know how to get calculations myself. THANK YOU :-)

A conductivity cell when standardized with 0.01 M KCl was found to have a resistance of 189 Ω. With 0.01 M ammonia solution the resistance was 2460 Ω. Calculate the bas dissociation constant of ammonia, given the following molar cconductivities at these concentrations: λ(K⁺) = 7305 Ω^-1cm²mol^-1; λ(Cl^-) = 76.4 Ω^-1cm²mol^-1; λ(NH₄⁺) = 73.4 Ω^-1cm²mol^-1; λ(OH^-) = 198.6 Ω^-1cm²mol^-1.

If the student uses 5.00 grams of (CH3)3CCO2H, how many grams of Mo(CO)6 will the student need to react completely with the (CH3)3CCO2H.

A student weighs by difference 0.1956g of sodium oxalate into a 100ml Volumetric flask and dilutes to the mark 10mL of HCI and 90mL of distilled water. The student then pipetted a 25mL aliquot of the ocalate solution to a 125mL Erlenmeyer flask. Approximately how many mL's of 0.02 M KMnO4 would be requied to reach the equivalence point of the trtration?

The balanced alf reactions are:

Reduction: MnO4- + 8H+ + 5e- --> Mn2+ + 4H2O

Oxidation: C2O4 2- ---> 2CO2+ 2e-

Combining (and balancing) the two half reactions yields:

2MnO4 2- + 5 C2O4 2- + 16H+ ---> 2Mn2+ + 10CO2 + 8 H2O

10)Explain briefly what happens when you eat french fries; describe the step by step process of what happens to the glucose units in the starch as they go through the different stages.