Question

1.Are the effects on chemical shifts of attached electronegative atoms additive? Explain. 2.What is the purpose...

1.Are the effects on chemical shifts of attached electronegative atoms additive? Explain.

2.What is the purpose of TMS?

3.Which is more energetic: 235 nm or 325 nm light? Explain.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

1. The effect of electronegative atoms on their neighbours is called an inductive effect because electronegative elements draw attached carbons downfield.

2. Tetramethylsilane (TMS) is the organosilicon compound having formula Si(CH3)4. TMS is the accepted as the internal standard for calibrating chemical shift for 1H, 13C and 29Si NMR spectroscopy in organic solvents.

3. The energy of light is given

thus we see that E is inversely related to wavelength.

therefore lesser wavelength light has more energy, 235nm has more energy

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
From the NMR spectroscopy organic chemistry lab: Are the effects on chemical shifts of attached electronegative...
From the NMR spectroscopy organic chemistry lab: Are the effects on chemical shifts of attached electronegative atoms additive? Explain.
1. Explain briefly what is an advantage of using delta scale for the chemical shift rather...
1. Explain briefly what is an advantage of using delta scale for the chemical shift rather than hertz scale 2. Define in your own words the following terms and acronyms: multiplet upfield TMS FID
1)Suppose that there is a monetary contraction. What are the effects of this monetary contraction on...
1)Suppose that there is a monetary contraction. What are the effects of this monetary contraction on output and interest rate? (Hint: How does it shifts the IS and the LM curves?) 2)Derive the AS relation and draw the AS curve. Explain the properties of AS relation 3)Derive the AD relation using IS-LM graphs    4)Please explain the effects of the monetary contraction in the short and medium run.   
Which statements are true? Explain why they are true/ or false. 1. The # of protons...
Which statements are true? Explain why they are true/ or false. 1. The # of protons in an atoms nucleus determines its chemical identity. 2. The number of electrons an atom has is constant during chemical reactions. 3. Atoms may not lose or gain protons during chemical reactions. 4. Isotopes have the same number of neutrons but different number of protons 5. Neutrons generally play no role in the outcome of a chemical reaction.
1. In 2014, we celebrated the 50th anniversary of the Civil Rights Act. Explain the purpose...
1. In 2014, we celebrated the 50th anniversary of the Civil Rights Act. Explain the purpose of Title VII of the Civil Rights Act of 1964 and its impact on employment practices. 2. What is the difference between a false positive and a false negative selection decisions. Which one has more negative consequences for an organization? Which one has more negative consequences for a job applicant? Explain.
1.What happened to the patterns when you increased the wavelength of the light? 2.Explain why your...
1.What happened to the patterns when you increased the wavelength of the light? 2.Explain why your answer to #1 occurred. 3.What happens to the diffraction pattern if d is increased? What if d is decreased? 4. Explain your reasoning for 3. Insert screenshots here to prove your point. 5. Name one of effects of diffraction seen in every day of life.
QUESTION 26 The easiest definition of a chiral carbon is a carbon with: a net positive...
QUESTION 26 The easiest definition of a chiral carbon is a carbon with: a net positive charge the central carbon of all amino acids four different substitutions four electronegative groups attached to it 1 points    QUESTION 27 What is the molecular geometry of the nitogen in the primary amine (-NH2) functional group? tetrahedral trigonal pyramidal T-shaped bent trigonal planar 1 points    QUESTION 28 How many carbons atoms are present in hept-3-yne? Enter a integer in the space below....
1. (a) explain the physical meaning of affinity. (b) What is the value in chemical equilibrium?...
1. (a) explain the physical meaning of affinity. (b) What is the value in chemical equilibrium? (c) as reactant species are consumed more, is the affinity reduced or increased? Show your reasoning. (10 points) 2. Calculate the Gibbs Free Energy Change and evaluate the possibility of the following reaction: CH4 (g) + 2O2 (g) à CO2 (g) + 2H2O (l) (15 points)
1. What is the purpose of a Primary Care Physician? 2. Define Medicaid? 3. What are...
1. What is the purpose of a Primary Care Physician? 2. Define Medicaid? 3. What are some of the major challenges as to Blood needs by hospitals and organizations?
CAN YOU PLEASE ANSWER ALL QUESTIONS. 1). What is the wavelength range of visible light? 2)....
CAN YOU PLEASE ANSWER ALL QUESTIONS. 1). What is the wavelength range of visible light? 2). If a photon of light has a frequency of 5 x 1014 Hz, what is it’s wavelength in nanometers? 3). If a photon of light has a wavelength of 550 nm, what is it’s frequency in Hertz? 4). Using Planck’s Equations, calculate the energy of a photon of light with a wavelength of 650 nm? 5). What happens to the frequency and Photon Energy...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT