Consider the equilibrium reaction

CO(g)+H2O(g)⇋CO2(g)+H2(g)

Determine how each change in the left-hand column will stress the system and in which direction the equilibrium reaction will shift in response.

Drag the appropriate labels to their respective targets

Choices for equilibrium shif:

Forward reaction rate temporarily decreases, Reverse reaction rate temporarily decrease, Reverse reaction rate temporarily increases, Forward reaction rate temporarily increases

Choices for system stress:

increase reactant , increase product, decrease product, decrease reactant

Determine Kc for the reaction (justify all your calculations):

½ N2(g) + ½ O2(g) + ½ Br2(g) NOBr(g)

From the following information at T=298 K

2NO(g) O2(g) + N2(g) Kc = 2.1 x 10^30

NO(g) + ½ Br2(g) NOBr(g) Kc = 1.4

What is the molality of a solution that has been prepared by mixing 53.6 g of sodium chloride with 464 g of water?

1) A 150.0 mL solution was prepared by mixing 100.0 mL of 1.00 M HONO (Ka = 4.5 x 10–4 ) with 50.0 mL of 1.00 M NaNO2 . Calculate the pH, [HONO], and [NO2–], once equilibrium has been established.

2). What is the pH, [OH^–], [HF], [F^–], and the percent ionization of a solution prepared as 0.50 M HF ? (HF: K_a = 7.2 x 10^-4)

50 M HF ? (HF: K_a = 7.2 x 10^-4)

3. Consider the reaction:

CO(g) + H₂O(g)    CO₂(g) + H₂(g)

At 800 K the equilibrium constant, K = 16.

If your reaction vessel initially contains 0.050 M CO, 0.050 M H₂O, 0.30 M CO₂ and 0.30 M H₂. What are the equilibrium concentrations of all of the components?

4. What is the pH of a saturated solution of Mn(OH)₂ ( K_sp = 2.0 x 10^–13)?

Mn(OH)₂ (s)   Mn²⁺ (aq) + 2 OH^-(aq)     

5) The weakest strong acids is Nitric acid, with a K_a = 240. The % ionizations of strong acids are rounded off to 100%. Calculate the % ionization of 0.100 M nitric acid without rounding.

6. A. An isotope with atomic number 84 and mass number 212 emits an alpha particle. what are the atomic number and mass number of the resultant atom?

B. An atom of atomic number 48 with a mass number of 113 emits A beta particle. What are the new atomic and mass numbers ?

7. Why does the pH change when CO₂ dissolves in water _?

            
8. The 32 isotope of phosphorus has a half life of 14.3 days. How long will It take for a sample of 100g to decay to 12.5g of phosphorus?

9. The maximum legal limit of arsenic in water is 0.0500ppm (parts per million) for drinking water. Is water with 8.00x10^-6 moles of As per liter suitable for drinking ? Show how you arrive at your answer.

10. How many grams of NaOH are in 2.00 liters of a 0.255molar solution ?

1. in redox reactions, what always happens to oxidizing agents?

2. what is the diinition of a physical property, and how it is used?

3.what is the definition of a chemical reaction, and how is it used?

4. if you are given an unknow liquid that can be either water or hydrocarbon, and the sample is clear, no color, and has no odor. what test would you use for it chemical or physical (and what will you see in the test to prove of support this answer)?

The solubility of CdCO_3(s) in 0.500 M KI_(aq) is 3.0x10^-4 M. Given the K_f for [CdI₄]^2- is 2.8x10⁵ , what is the K_sp for CdCO₃?

2-Give recipe example for electroplating Cu, Au, and Ni. Explain how to prepare the electroplating solution.

1)

Which of the following solutions is a good buffer system?

Which of the following solutions is a good buffer system?

is this true... the longer the hydrocarbon chain the higher the surface tension?

Calculate the ultimate biochemical oxygen demand (BOD) and the total organic carbon (TOC) concentration of an industrial wastewater containing 434 mg/L of organic matter that has been analyzed and found to have the empirical formula C9H15O5N and to be 100% biodegradable. Assume that no other organic, biodegradable or oxygen-demanding materials are present in the wastewater; and also assume that the nitrogen is converted to ammonia, NH3. Hints: a) although the molecular weight of the organic matter is not known, and may vary from one molecule to another, the formula weight can be used in similar fashion to convert mg/L to M; b) for completely biodegradable organic matter, the ultimate BOD is equal to the theoretical oxygen demand; and c) it is best to begin by writing the appropriate reaction and balancing it.

P.S. I know this is supposed to go in the Chemical Engineering subject but I can't find it. I have tried Civil Engineering but I have received no replies. Please help as much as you can.

How many total atoms are in 0.900 g of P2O5?

1. For the following reaction, 4.52 grams of oxygen gas are mixed with excess butane (C₄H₁₀). The reaction yields 3.09 grams of carbon dioxide.

butane (C₄H₁₀) (g) + oxygen (g) ----> carbon dioxide (g) + water (g)

2. For the following reaction,  5.60 grams of  chlorine gas are mixed with excess phosphorus (P₄) . The reaction yields  4.90 grams of  phosphorus trichloride .

phosphorus (P₄) ( s ) +  chlorine ( g ) ----> phosphorus trichloride ( l )

For all questions, please show all work and/or provide explanations. The K_d of the insulin receptor is 1.5 x 10^-10 M. There are 32,000 insulin receptors per cell. Assume one insulin binding site per receptor molecule.

The K_d of the insulin receptor is 1.5 x 10^-10 M. There are 32,000 insulin receptors per cell. Assume one insulin binding site per receptor molecule.

a) At what [insulin] are 50% of the total receptors bound by insulin?

b) At what [insulin] are 80% of the total receptors bound by insulin?

c) 80% is a 1.6-fold increase over 50%. What is the fold-increase of [insulin] for this 1.6-fold increase in receptor/ligand complex concentration, [RL]?

d) If [insulin] is 4.2 x 10^-12 M, what fraction of the total receptors are bound by insulin?

1) If you had not dried the solid, would the calculated percent yield have been higher, lower, or unchanged? Explain

2)Boron trichloride is prepared from the following reaction. 2B2O3 + 6Cl2 + 3C --> 4BCl3 + 3CO2 If 8.254g of B2O3 is mixed with 4.446g of Cl2 and 4.115g of C then answer the following questions.   

- What is the theoretical yield of boron trichloride in grams?

- How much of each of the excess reagents with remain once the reaction is complete? (report in grams)

3) If the yield of the reaction in question 2 is known to be only 73.42%, how much of each of the three reagents would you need to obtain 10.000g of boron trichloride?