In the first step of the Ostwald process for the synthesis of nitric acid, ammonia is converted to nitric oxide by the high-temperature reaction
4NH3(g)+5O2(g)→4NO(g)+6H2O(g)

Part A: How is the rate of consumption of O2 related to the rate of consumption of NH3?

Part B: How is the rate of formation of NO related to the rate of consumption of NH3?

Part C: How is the rates of formation of H2O related to the rate of consumption of NH3?

Determine the pH change when 0.069 mol KOH is added to 1.00 L of a buffer solution that is 0.326 M in HClO and 0.290 M in ClO^-.

pH after addition ? pH before addition = pH change =

A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.20 gallons, what is the boiling point of the solution? Make the following assumptions in your calculation: at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Assume that the engine coolant is pure ethylene glycol (HOCH2CH2OH), which is non-ionizing and non-volatile, and that the pressure remains constant at 1.00 atm. Also, you\'ll need to look up the boiling-point elevation constant for water.

Consider the reaction:
2NO(g)+Br2(g)⇌2NOBr(g) Kp=28.4 at 298 K
In a reaction mixture at equilibrium, the partial pressure of NO is 105 torr and that of Br2 is 132 torr .

What is the partial pressure of NOBr in this mixture?

These post lab questions are regarding the spectroscopic determination of an equilibrium constant of an FeSCN complex where the wavelength was set at 447 nm. These are general questions about the effects on calculations each scenario would have... Sooooo

1. What would have happened to your absorbance reading and to your calculations of Keq if the spectrophotometer had been set at 520 nm rather then 447 nm? ) Clearly explain

2. How would your calculations of the concentration of FeSCN been affected if the cuvette had a 1.5 path length rather than a 1.0 cm path length you were told to use.

3. Finally, Would your equilbirium constant results been affected if you had swapped the volumes used of Fe and SCN?

Organic chemistry lab- How is the purity of the recrystallized material determined?

I know that its not three and 4 but I can't figure out the answer to this question.

Which reaction is most likely to have a positive ΔSsys?

Which reaction is most likely to have a positive ?

The temp and number density in a typical Planetary nebula are 3,500 K and 2.3*10⁹ m^-3

a. Calculate the pressure in Pa in a Planetary nebula

b. Calculate the Mean free path in the nebula if the particles have a diameter of 0.20 nm

c. calculate the mean speed of a hydrogen atom under the nebula conditions above

d. Calculate the collision density for a hydrogen atom in the nebula.

Compute the mass of  ₉₂U²³⁵ + ₀n^1.

^{also known as Uranium -235}

^{please type out all steps.}

To get around the problem presented in question 2, the internal standard technique is used. An internal standard is a volatile compound that does not interfere with the GC analysis.

• 10.0 mg of internal standard compound (Std) added to 50.0 mg of the mixture of A, B, and C (problem 2) to give a mixture with a total mass of 60.0 mg.

• The sample is analyzed by GC.

• Relative Peak Areas: Std (1.00), A (0.75), B (3.00). Remember C does not elute.

• Based off of the 10.0 mg of internal standard added to the sample, what are the weight percentages of A and B in the original sample?

Determine the pH of a solution when 22.7 mL of 0.028 M HNO3 is mixed with 19.6 mL of

A) 0.0120 M NaOH.
B) distilled water
C) 0.0080 M HCl
D) 0.144 M KOH

Balance the following equation for reactions occurring in acidic solution: MnO4__ + H2S Mn2+ + S

Two objects of different composition with same mass are painted black and are placed in the sun at the same time. After 10 minutes object B is hotter than object A . Which has the higher specific heat . Explain 2.) Gold has a density of 19.3g / cm cube . If a chain necklace has a mass of 605g and volume of 42.7 cm cube , is the chain pure gold? Show calculations and explain basic concept of density.

1.why is it that ammonia can solvate the electron given by Na? how does it do this.

2. why is it that Na is explosive with water but not in ethanol when in both solvents the product is hydrogen?

3. Why cant ethanol or whatever solvate the electron like ammonia does?

please give a detailed explanation.

What is the ratio of the mass of fresh water produced to the mass of water in the incoming brine?Multi-stage flash distillation is used to desalinate seawater so it is fit for human consumption. A flash distillation tank is composed of small chambers (called \"stages\"), each at a lower pressure than the previous stage. Salt water enters the first chamber, some fresh water flash evaporates, condenses, and is removed from the distillation tank. The remaining salt water moves to the next chamber, some fresh water flash evaporates, condenses, and is removed from the distillation tank. The remaining salt water moves to the next chamber, and the process repeats until very salty water is expelled as waste. Brine that is 35,000 ppm salt is desalinated through a 5-stage flash distillation process. The pressure in the stages is such that 8.5% by mass of the water entering the stage evaporates and leaves as fresh water. If the desalination plant wants to produce 1200.0 gallons of drinking water per day, how many gallons of brine must the plant take in per day? The density of fresh water is 1.000 g/cm3. The density of brine is 1.025 g/cm3.

What mass of waste brine is expelled in one day?

What is the ratio of the mass of fresh water produced to the mass of water in the incoming brine?

The larger this ratio is, the more fresh water is produced for the given incoming water. If additional stages are added, each removing 8.5% of the available incoming water, so that the above ratio gets above 0.5, what are the total number of stages in the multi-stage flash distillation tank? (respond with a whole number)

The energy requirement of this type of desalination plant is 25.5 kW·h/m3 of fresh water. How much energy does the plant require to produce 1200.0 gallons of fresh water?