Due to emfs) must be equal to the sum of voltage drops over the loop. R2 R1 I I=IR1+IR2 When starting a problem we have to assume something about the…

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Due to emfs) must be equal to the sum of voltage drops over the loop. R2 R1 I I=IR1+IR2 When starting a problem we have to assume something about the direction of the currents through each line. Which of the following cannot be correct? What is Kirchhoff II for the right small loop (with R2 and R3)? A) I3R3+I2R2=0 b) I3R3-I2R2=0 c) I3R3-I2R2+V=0 What is Kirchhoff II for the loop (with V,R4 and R3)? What is the power dissipated by R3? 12V 12V 12V At which point (A,B,C,D) is the potential highest and at which point lowest? All resistors are equal. Circuit breakers are designed to cut off power if the current becomes too high. In a house a circuit breaker is rates at 15A and is connected to a line that holds a coffee maker (1200 W) and a toaster (1800 W). If the voltage is 120 V, will the breaker cut off power?

32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur trioxide.

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32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur trioxide. If 16 g of sulfur and 100 g of oxygen are placed into a sealed container and allowed to react, what is the mass of sulfur trioxide in the container after the reaction is completed?

#9 A thin plastic ring of radius 0.05 m has been rubbed with a silk cloth, and has gained a net charge of 5 108 coulombs, distributed uniformly over…

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#9A thin plastic ring of radius 0.05 m has been rubbed with a silk cloth, and has gained a net charge of−5 × 10−8coulombs, distributed uniformly over its surface. The ring lies in the x-z plane. A cubicalblock of copper with side length 0.07 m is placed with its center 0.12 m from the center of the rod, asshown in the diagram below. The copper block has a charge of 2 × 10−9coulombs(a) What is the electric field at the center of the block due only to the charged ring? Express youranswer as a three-component vector.(b) What is the electric field at the center of the block, due only to the charges in and on thecopper? Explain briefly. Express your answer as a three-component vector

A metal sample weighing 71.9 g and at a temperature of 100.0 oC was placed in 41.0 g of water in a calorimeter at 24. At equilibrium, the temperature…

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A metal sample weighing 71.9 g and at a temperature of 100.0 oC was placed in41.0 g of water in a calorimeter at 24.5 oC. At equilibrium, the temperature of thewater and metal was found to be 35.0 oC. what was the delta T for the metal? What was the delta T for the water? How much heat flowed into the water?

holipid bilayer, such as that surrounding the nucleus, mitochondrion, chloroplast , why is there an inter- membrane space when is a double membrane?…

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Draw a double phospholipid bilayer, such as that surrounding the nucleus, mitochondrion, & chloroplast , why is there an inter- membrane space when is a double membrane?

A chloroplast is a type of organelle. Chloroplasts are the site of photosynthesis in eukaryotic cells.Therefore they are only present in photosynthetic cells e.g. plant cells and algae. There are…

you do not need to draw any compounds out.

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Please help with all the questions with questions marks. you do not need to draw any compounds out. These are fairly short answers please help with all.

A. Square Planar Complexes 

Picture a four ammonia molecules: NHHH These will attach to the metal atom through the “extra” bond position on the nitrogen.

Between a model of cis-diamminedichloridoplatinum(II) and model of trans-diamminedichloridoplatinum (II). 

Which conformation should be polar? Which one should be soluble in water and why? 

B. Tetrahedral Complexes. 

1. Construct a water molecule. This will attach to the metal atom through one of the “extra” bond positions on the oxygen. 

2. Construct a model of ammineaquabromidochloridoiron(II). 

3. Using the model from step 1 as guide construct the mirror image of the model. 

4. Rotate one of the models to try to make it match exactly (superimpose) with the other model. 

5. Replace the aqua ligand with another ammine ligand in both of the models. 

6. Rotate one of the models to try to make it match exactly (superimpose) with the other model. 

7. Did the mirror images of the models of ammineaquabromidochloridoiron(II) match up exactly (superimpose) with one another? 

8. Did the mirror images of the models of diamminebromidochloridoiron(II) match up exactly (superimpose) with one another? 

9. Which of these compounds exists as stereoisomers? 

C. Octahedral complexes. 

1. Construct 6 ethylenediamine molecules: (we are not showing the hydrogen atoms here). These will attach to the metal atom through the nitrogen atom’s lone pairs.CCNN 

2. Construct the model for the tris(ethylenediamine)cobalt(II) ion. 

3. Using the model from step 2 as a guide, construct the mirror image of the model in step 2. 

4. Rotate the model from step 3 to try to make it match up exactly (superimpose) with the model from step 2. 

5. Replace one of the ethylenediamines in each model with 2 chloride ions. The two chloride ions should be in adjacent positions around the central metal atom (cis- conformation). 

6. Rotate one of the modified models to try to make it match up exactly (superimpose) with the other one. 

7. Replace one more of the ethylenediamines with 2 ammonia molecules in each of the models. 

a. While the chlorides are in the cis- position, examine the structures to see if the models match up exactly (superimpose). 

8. In each model assembled in step 7 swap the positions of two of the appropriate ligands so that the chloride ions are on opposite sides of the metal atom (trans- conformation). 

9. Rotate one of the modified models to try to make it match up exactly (superimpose) with the other one. 

10. Did the mirror images of the models of the tris(ethylenediamine)cobalt(II) ion match up exactly (superimpose) with one another?

11. Does this complex ion exist as enantiomers? 

12. Did the mirror images of the models of the cis-dichloridobis(ethylenediamine)cobalt(II) match up exactly (superimpose) with one another? 

13. Does this compound exist as enantiomers? 

14. Did the mirror images of the models of either cis- or trans-diamminedichlorido (ethylenediamine)cobalt(II) match up exactly (superimpose) with one another? 

15. Which of these compounds exist as enantiomers if any?

What are all the planets in the solar system and how are they listed from largest to smallest?

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What are all the planets in the solar system and how are they listed from largest to smallest? 

THE PLANETS IN SOLAR SYSTEM IN ORDER OF SIZEThey are nine known planets in the solar systems; these planets are arranged from largestto the smallest according to their diameter sizes as measured…

Calculate the energy change (in kilojoules per mole) for the formation of the following substances from their elements. CaF2(The sublimation energy…

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Calculate the energy change (in kilojoules per mole) for the formation of the following substances from their elements. CaF2(The sublimation energy for is +178.2, = +589.8, = +1145, and the lattice energy of is 2630 .)

Help with nucleophilic substitution reaction tert-butyl GC-MS comp. RT min scan num. area 1 1.35 10 5877649 2 1.73 292 6482041 show calculations for…

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6482041

  1. show calculations for the ratio of t-butyl bromide to t-butyl chloride. identify which is R-Br and R-Cl ratio, based on GC-MS data.
  2. is the ratio consisted with SN1 mechanism?

1-butanol susb reaction

  1. show calculations for the ratio of 1-bromobutane to 1-cholorbutane. identify which is R-Br and R-Cl ratio, based on NMR data.
  2. is the ratio consisted with SN2 mechanism?
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