george-123

Give a general description of the light and dark reactions of photosynthesis. Light – light energy is converted into chemical energy (ATP) Dark – Carbon fixation – carbon is fixed into organic molecules (sugars) using ATP and enzymes

Specify where photosynthesis occurs and describe, in general, how it converts light energy into chemical energy.

photosynthesis converts energy from _ into the potential energy in _

2. Photosynthesis is a process that converts ________________________ energy into ____________________________ energy.

Which plants convert trash into energy? plants convert trash into energy. The energy produced is known as

Consider the following reaction where Kc = 55.6 at 698 K.

H2(g) + I2(g) 2HI(g)

A reaction mixture was found to contain 2.54×10-2 moles of H2(g), 4.07×10-2 moles of I2(g) and 0.294 moles of HI(g), in a 1.00 liter container.

Is the reaction at equilibrium?

If not, what direction must it run in order to reach equilibrium?

The reaction quotient, Qc, equals ________?

The reaction: ________

A. must run in the forward direction to reach equilibrium.

B. must run in the reverse direction to reach equilibrium.

C. is at equilibrium.

Consider the following reaction where Kc = 83.3 at 500 K. PCl3(g) + Cl2(g) PCl5(g) A reaction mixture was found to contain 3.95×10-2 moles of PCl3(g), 3.87×10-2 moles of Cl2(g) and 9.77×10-2 moles of PCl5(g), in a 1.00 liter container. Is the reaction at equilibrium? If not, what direction must it run in order to reach equilibrium? The reaction quotient, Qc, equals . The reaction A. must run in the forward direction to reach equilibrium. B. must run in the reverse direction to reach equilibrium. C. is at equilibrium.

Consider the following reaction where K_c = 77.5 at 600 K.

CO(g) + Cl₂(g) <---->COCl₂(g)

A reaction mixture was found to contain 2.42×10^-2 moles of CO(g), 3.94×10^-2 moles of Cl₂(g) and 0.116 moles of COCl₂(g), in a 1.00 liter container.

Is the reaction at equilibrium?
If not, what direction must it run in order to reach equilibrium?

The reaction quotient, Q_c, equals________ .

The reaction________
A. must run in the forward direction to reach equilibrium.
B. must run in the reverse direction to reach equilibrium.
C. is at equilibrium.

Consider the following reaction where Kc = 77.5 at 600 K: CO(g) + Cl2(g) --> COCl2(g)

A reaction mixture was found to contain 2.21×10-2 moles of CO(g), 4.21×10-2 moles of Cl2(g) and 0.120 moles of COCl2(g), in a 1.00 Liter container.

Indicate True (T) or False (F) for each of the following:

1. In order to reach equilibrium COCl2(g) must be consumed.

2. In order to reach equilibrium Kc must decrease.

3. In order to reach equilibrium CO must be consumed.

4. Qc is less than Kc.

5. The reaction is at equilibrium. No further reaction will occur.

Consider the following reaction where Kc = 6.50×10-3 at 298 K:

2 NOBr (g) 2 NO (g) + Br2 (g)

A reaction mixture was found to contain 8.07×10-2 moles of NOBr (g), 4.06×10-2 moles of NO (g), and 4.46×10-2 moles of Br2 (g), in a 1.00 liter container.

Indicate True (T) or False (F) for each of the following:

1. In order to reach equilibrium NOBr(g) must be consumed .

2. In order to reach equilibrium Kc must decrease .

3. In order to reach equilibrium NO must be consumed .

4. Qc is less than Kc. 5. The reaction is at equilibrium. No further reaction will occur.

Consider the following reaction where Kc = 6.50×10-3 at 298 K.

2NOBr(g) 2NO(g) + Br2(g)

A reaction mixture was found to contain 8.70×10-2 moles of NOBr(g), 4.86×10-2 moles of NO(g), and 4.06×10-2 moles of Br2(g), in a 1.00 liter container.

Is the reaction at equilibrium?

If not, what direction must it run in order to reach equilibrium?

The reaction quotient, Qc, equals ______________?

The reaction: ___________?

A. must run in the forward direction to reach equilibrium.

B. must run in the reverse direction to reach equilibrium.

C. is at equilibrium.

1.For the reaction H2(g) + I2(g) 2HI(g), Kc = 50.2 at 445ºC.

If [H2] = [I2] = [HI] = 1.75 × 10–3 M at 445ºC.

Which of the following is true based on the above?

A) Qc > Kc, the reaction proceeds from left to right to reach equilibrium

B) Qc > Kc, the reaction proceeds from right to left to reach equilibrium

C) Qc < Kc, the reaction proceeds from left to right to reach equilibrium

D) Qc < Kc, the reaction proceeds from right to left to reach equilibrium

E) Qc = Kc, the reaction is currently at equilibrium

2.For the following reaction at equilibrium, which change will cause the equilibrium to shift to the left?

2NOBr(g) 2NO(g) + Br2(g), Hºrxn = 30 kJ/mol

A) Increase the container volume.

B) Remove some NO.

C) Remove some Br2 .

D) Add more NOBr.

E) Decrease the temperature.

3.Concerning the following reaction at equilibrium:

3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g), increasing the volume of the container would:

A) Shift the equilibrium to the right

B) Shift the equilibrium to the left

C) Increase the value of the equilibrium constant, K

D) Decrease the value of the equilibrium constant, K

E) No change

4.In the reaction: CH3COOH(aq) + NH2– (aq) CH3COO– (aq) + NH3(aq), the conjugate acid-base pairs are:

A) pair 1: CH3COOH and CH3COO– ; pair 2: NH2– and NH3

B) pair 1: CH3COOH and NH3; pair 2: NH2– and CH3COO–

C) pair 1: CH3COOH and NH2– ; pair 2: NH3 and CH3OO–

D) pair 1: CH3COOH and CH3COO– ; pair 2: NH4+ and NH3

E) pair 1: CH3COOH and CH3COO– ; pair 2: NH2– and NH3+

5.Which one of these net ionic equations represents the reaction of a strong acid with a strong base?

A) H+(aq) + OH–(aq)  H2O(aq)

B) H+(aq) + CH3NH2(aq)  CH3NH3+(aq)

C) OH–(aq) + HCN(aq)  H2O(aq) + CN–(aq)

D) HCN(aq) + CH3NH2(aq)  CH3NH3+(aq) + CN–(aq)

6.Predict the direction in which the equilibrium will lie for the reaction

H3PO4(aq) + HSO4–(aq) H2PO4–(aq) + H2SO4(aq).

Ka1(H3PO4) = 7.5 × 10–3; Ka(H2SO4) = very large

A) to the right

B) to the left

C) in the middle

7.Which one of these salts will form a basic solution upon dissolving in water?

A) NaI

B) NaF

C) NH4NO3

D) LiBr

E) Cr(NO3)3

8.The pH of coffee is approximately 5.0. How many times greater is the [H3O+] in coffee than in tap water having a pH of 8.0?

A) 0.62

B) 1.6

C) 30

D) 1,000

E) 1.0 × 104

9.Which one of these salts will form a neutral solution on dissolving in water?

A) NaCl

B) KNO2

C) NaCN

D) NH4NO3

E) FeCl3

10.When the following reaction is at equilibrium, which of these relationships is always true?

2NOCl(g) 2NO(g) + Cl2(g)

A) [NO] [Cl2] = [NOCl]

B) [NO]2 [Cl2] = [NOCl]2

C) [NOCl] = [NO]

D) 2[NO] = [Cl2]

E) [NO]2 [Cl2] = Kc[NOCl]2

11.A 0.10 M NH3 solution is 1.3% ionized. Calculate the H+ ion concentration.

NH3 + H2O NH4+ + OH–

A) 1.3 × 10–3 M

B) 7.7 × 10–2 M

C) 7.7 × 10–12 M

D) 0.13 M

E) 0.10 M

Write the equilibrium constant expression for the dissolution ofammonia in water NH3 (g) <-> NH3 (aq)

K=57.5

Use this equilibrium constant expression to estimate the partialpressure of NH3 (g) over a solution containing 5 X10^-9 M NH3 (aq).These are conditions similar to that found for acid rains with ahigh ammonium ion concentration.

I think the Kc for the reaction would be Kc= [NH3]/[NH3] whichwould equal 1. But how do you get the partial pressure from theinformation given?

Most M-O-M bonds are angular but some are linear, namely, that in[(NH3)5Cr-OCr( NH3)5]4+. Why?

Think it has to do with the bridging of the Oxygen atom, but notsure.

Discuss the features of WPI. Why this Index is used to measure Inflation?

How does the government measure inflation?

The fundamental economic philosophy governing market activity during the Feudal era emerged from the Church through Canon Law and was upheld by guilds and religious convictions.

1. Did the Templars', a sect of the church, business practices adhere to Feudal "regulations" on business conduct? If not, why not?

How does the government measure inflation? AND What is the limitations of official economic statistics?

Why is it important for the government to measure the economy?

Why is government important?

Mid-Unit Assessment, Part 2: Cell Biology Complete this teacher-scored portion of the assessment and submit it to your teacher.

Question 1:

1. Some cells produce and secrete high levels of digestive proteins.

Which organelles would you expect to be abundant in those cells, and why?

Answer:

Question 2:

2. Explain how active transport helps a nerve cell maintain its resting potential.

Answer:

Question 3:

3. The Atlantic cod is a common fish of the Atlantic Ocean that must drink seawater to meet its water needs. Explain how active transport helps the Atlantic cod maintain homeostasis with regard to the balance of sodium and chlorine ions, which are abundant in seawater.

Answer:

environmental sciences

Describe the significance of the community to SD and the issues that arise when involving communities in sustainability programs.
need referenes!!

please write more and more 

A toll collector on a highway receives $4 for cars and $5 for buses. At the end of a 2-hour period, she collected $104. How many cars and buses passed through the toll booth during that period? List all possible solutions.

the cross represented by a+b+c+/abc × abc/abc is