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maksim [4K]
4 years ago
15

The following 1h nmr absorptions were obtained on a spectrometer operating at 200 mhz and are given in hz downfield from tms. Co

nvert the absorptions to δ units.
Physics
1 answer:
Alex Ar [27]4 years ago
7 0

Answer:

Explanation:

We will use the formula below:

Chemical shift in ppm = peak position in Hz (relative to TMS) /

spectrometer frequency in MHz.

a) 956Hz/200Hz= 4.78 ppm

b) (2.40E3)/200Hz= 12 ppm

c) (1.97E3)/200Hz = 9.85 ppm

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Hello!
Mnenie [13.5K]

Answer:

T_0=80695.17162...

Explanation:

Given equation:

\ln \left(\dfrac{T_0-100}{T_0}\right)=-0.00124

To solve the given equation:

\textsf{Apply log rules}: \quad e^{\ln (x)}=x

\implies \dfrac{T_0-100}{T_0}=e^{-0.00124}

Multiply both sides by T₀:

\implies T_0-100=T_0e^{-0.00124}

Add 100 to both sides:

\implies T_0=T_0e^{-0.00124}+100

Subtract T_0e^{-0.00124} from both sides:

\implies T_0-T_0e^{-0.00124}=100

Factor out the common term T₀:

\implies T_0(1-e^{-0.00124})=100

Divide both sides by (1-e^{-0.00124})

\implies T_0=\dfrac{100}{1-e^{-0.00124}}

Carry out the calculation:

\implies T_0=\dfrac{100}{1-0.99876...}

\implies T_0=\dfrac{100}{0.001239231...}

\implies T_0=80695.17162...

6 0
2 years ago
1.Energy is used when a force acts over a.....................
Leona [35]

Answer:

the same mass answer b) but i dont know first question

5 0
3 years ago
A piece of wood has a mass of 8g and a volume of 10cm³ work out the density of the wood
olchik [2.2K]

Answer:

<h2>0.8 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 8 g

volume = 10 cm³

We have

density =   \frac{8}{10}   =  \frac{4}{5}  = 0.8 \\

We have the final answer as

<h3>0.8 g/cm³</h3>

Hope this helps you

5 0
3 years ago
How is friction involved in the movement of space​
pashok25 [27]

Answer:

Friction can stop or slow down the motion of an object.

Explanation:

The slowing force of friction always acts in the direction opposite to the force causing the motion.

7 0
3 years ago
Read 2 more answers
How much time would it take for the sound of thunder to travel 2000 meters of sound travels at the speed of 330 meters per secon
SpyIntel [72]

Time = (distance covered) / (speed)

Time = (2,000 m) / (330 m/s)

<em>Time = 6.06 seconds</em>

5 0
4 years ago
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