Q1. A catalyst support adsorbs 2 cm³ of nitrogen at 1 mbar pressure and 6 cm3 at 6 mbar. Find the volume of gas corresponding to one monolayer coverage (V_m).

(nb Give answer to 2 dp even if its an integer - eg write 5.00. DO NOT give units in your answer)

Q2.

In the following mechanism * indicates a radical species. Identify the nature of each of the steps in the reaction:

1.     Br₂ + H₂ --> 2Br* + H₂

2.     Br₂ + Br₂--> 2Br* + Br₂

3.     Br* + H₂  --> HBr + H*

4.     H* + Br₂ --> HBr + Br*

5.     H* + HBr --> H₂ + Br*

6.     Br* + HBr --> Br₂ + H*

7.     2Br* + Br₂ --> 2Br₂

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution.

3. Describe how you would prepare 50 ml of 0.2 M potassium iodate [KIO3] dissolved in the 0.08 M sulfuric acid [H2SO4] that you have prepared above.

4. Describe how you would prepare 25 ml of 3.6 M hydrogen peroxide [h2O2] from a 30% (w/w) stock H2O2 solution (

5. Describe how you would prepare 50 ml of a 3% (w/v) soluble starch solution in water.

Molecular weights:

Malonic acid: 104.6

Manganese sulfate: 169.01

Potassium iodate: 214

Hydrogen peroxide: 34.01

URGENT QUESTION!!! Please answer this question with detailed explanation. Thank you.

A solution is made by mixing 100mL of 0.1 M HCl with 100 mL of 0.1 M NH₃ at 25C (degrees celcius). What is the pH of the final solution? (K_b for NH₃ = 1.8 x 10^-5)

Explain what would hypothetically happen to the amount of ATP available to a cell if the entire Cori cycle (glucose going to lactate and then back to glucose) were to occur and remain within that single cell? Justify your response by providing specific numbers of ATP generated or used in the different parts of the cycle.

Draw the mechanism for the formation of the carbocation obtained. Explain why the solution of this carbocation is colored. See below for information on the experiment:

To test for a carbocation in a lab, we did the following:

1) Dissolve a small amount of diphenylmethanol into methanol, and add concentrated sulfuric acid dropwise. This caused the solution to turn yellow/orange.

2) Dissolve a small amount of benzophenone into methanol, and add concentrated sulfuric acid dropwise. The solution remained clear.  

0.4800g of a mixture that is 80.0% by mass sodium carbonate and20.0% by mass sodium hydroxide reacts with 35.00mL of hydrochloricacid. Carbon dioxide is detected as one of the products. a. what is the normality of the hydrochloric acid? b. what is the molarity of the hydrochloric acid?

What is the difference between a fluorescence excited spectrum and a fluorescence emission spectrum? Which one resembles the absorption spectrum? & Make a sketch showing absorptioina and fluorescence spectrum.

A 65.0 mL solution of 0.113 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.113 M HCl. The pKa values for the amino acid alanine are 2.344 (pKa1) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. a) Calculate the pH at the first equivalence point b) Calculate the pH at the second equivalence point

A titanium cube contains 3.2 ×1023 atoms. The density of titanium is 4.50 g/cm3

What is the edge length of the cube?

Express your answer with the appropriate units.

This is an Inorganic C question. Answer all parts and show all work for full credit.

7. The bond angles of NH₃, PH₃, and AsH₃ are 106.6°, 93.7°, 92.8°, respectively.  

1. 1. Briefly describe what may be causing the difference in these angles.
2. 2. Your fellow classmate wrote for part of his answer for 2a above is: “the lone pair is bigger for As than for P than for N.”  Based on your answer to 2a, is his statement correct? Explain why or why not.

2) You have been assigned to create a missile warhead reentry nose cone. Describe the properties needed for the nose cone. ?

Please explain in clear words. Thanks

Suppose a student failed to dry (remove the water from) the KHP before using it to standardize the NaOH solution. What effect would this have on the calculated molarity of the NaOH solution?

Suppose a student failed to dry (remove the water from) the KHP before using it to standardize the NaOH solution. What effect would this have on the calculated equivalent mass of the unknown acid?

Arrange these elements in order of increasing atomic size: Al, B, C, K, Na.

How much heat, in kJ, is absorbed by a 77.0 g sample of aluminum at 25.0°C when it is immersed in boiling water? The specific heat capacity of aluminum is 0.900 J/g°C and the specific heat capacity of water is 4.184 J/g°C. Enter your answer with no units.

Need some help on this one. Please show work/relevant formulas. Thanks for any help!