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Karolina [17]
4 years ago
8

A synthetically-produced narcotic medication, drug, or agent similar to the opiate morphine, but not derived from opium; used to

relieve pain
Chemistry
1 answer:
Otrada [13]4 years ago
4 0
A synthetically-produced narcotic medication, drug, or agent similar to the opiate morphine, but not derived from opium; used to relieve pain
Yes
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What is the longest wavelength in the Balmer series? (Hint: the Rydberg constant for Hydrogen is 1.096776×107 1/m, and the Balme
boyakko [2]

<u>Answer:</u> The longest wavelength of light is 656.5 nm

<u>Explanation:</u>

For the longest wavelength, the transition should be from n to n+1, where: n = lower energy level

To calculate the wavelength of light, we use Rydberg's Equation:

\frac{1}{\lambda}=R_H\left(\frac{1}{n_i^2}-\frac{1}{n_f^2} \right )

Where,

\lambda = Wavelength of radiation

R_H = Rydberg's Constant  = 1.096776\times 10^7m^{-1}

n_f = Higher energy level = n_i+1=(2+1)=3

n_i= Lower energy level = 2    (Balmer series)

Putting the values in above equation, we get:

\frac{1}{\lambda }=1.096776\times 10^7m^{-1}\left(\frac{1}{2^2}-\frac{1}{3^2} \right )\\\\\lambda =\frac{1}{1.5233\times 10^6m^{-1}}=6.565\times 10^{-7}m

Converting this into nanometers, we use the conversion factor:

1m=10^9nm

So, 6.565\times 10^{-7}m\times (\frac{10^9nm}{1m})=656.5nm

Hence, the longest wavelength of light is 656.5 nm

4 0
3 years ago
How many grams of KOH are required to make 125mL of a .500M solution?
Bumek [7]

Answer:

Answer:3.51 g

Explanation:

M(KOH)= 39.10 + 16 + 1.008 = 56.108 g/molAmount of substance is n= m/M = cV and mass m= McVolume in litres is 0.125 l

3 0
2 years ago
Avoltic cell prepared using aluminium and nickle has the flowing cell notation ​
SpyIntel [72]

Answer:

Al (s) | Al³⁺ (aq) || Ni²⁺ (aq) | Ni (s)

Explanation:

It seems that you meant "A voltic cell".

Here, Al (s) represents the solid anode while Al³⁺ is in aqueous phase, these two forms are separated by a solid line. || is the salt bridge while Ni²⁺ is in aqueous phase and is reduced on the nickel cathode that is Ni (s).

5 0
3 years ago
How many elements compose the majority of rock-forming minerals?
PSYCHO15rus [73]
10 elements compose the bulk of rock forming minerals
4 0
4 years ago
Work done by a system is positive or negative?
saul85 [17]
The internal energy has the symbol U. Q is positive if heat is added to the system, and negative if heat is removed;

....."W is positive if work is done by the system"........

and negative if work is done on the system.


So, work done by a system is positive.
6 0
4 years ago
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