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expeople1 [14]
3 years ago
9

What is the actual name of compound-s that is used to treat arthritis?

Chemistry
1 answer:
Rudiy273 years ago
6 0
Reichsteins substance if I remember correctly.

Hope this helped! :)

- Juju
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For a grating, how many lines per millimeter would be required for the first order diffraction line for λ = 400 nm to be observe
MA_775_DIABLO [31]

Answer:

For a grating, how many lines per millimeter would be required for the first order diffraction line for λ = 400 nm to be observed at a reflection angle of 5^{o} when the angle of incidence is  45^{o}?

<em>The number of lines per mm is 1985 lines </em>

Explanation:

A diffraction grating is used to separate a light source with multiple wavelengths into single wavelengths of different colors using the principle of diffraction.

Calculating for the spacing between the reflected surfaces

The spacing between the reflecting surfaces can be obtained using the relationship with the wavelength as shown below;

nA = d (sin i + sin r) ....................................1

where n is the order of diffraction = 1;

A is the wavelength = 400 nm

i is the angle of incidence = 45^{o}

r is the angle of refraction =  5^{o}

making d the subject formula from equation 1 we have;

d = \frac{nA}{sin i + sin r}...........................2

Now we substitute the given parameters into equation 2;

d = \frac{1(400 nm)}{(sin 45^{o}  ) + (sin 5^{o} )}

d = \frac{400 nm}{0.707 +0.087}

d = 503.7 nm

The spacing between reflecting surfaces is 503.7 nm

Calculating for the number of lines per millimeter

To calculate the number of spacing per millimeter we convert nanometer to millimeters, 1 mm =10^{6} and 1 line = 503.7 nm;

1 mm *\frac{1 line}{503.7 nm} *\frac{10^{6} }{mm}

= 1985 lines

Therefore the number of lines per millimeter would be 1985 lines

6 0
3 years ago
Duncan takes a break from studying and goes to the gym to swim laps. If swimming burns 705 calcal per hour, how many kilojoules
liraira [26]

Answer:

705kj

Explanation:

5 0
3 years ago
PLEASEEEE HELP I WILL GIVE 30 POINTS Cobalt
Ymorist [56]

Answer:

Iron: Fe

Co: Cobalt

Na: Sodium

Tin: Sn

P: Phosphorus

F: Flourine

Fe: Iron

Magnesium: Mg

Uranium: U

Ca: Calcium

Carbon: C

Lead: Pb

Ag: Silver

Zn: Zinc

Ni: Nickle

----------------

There is honestly no right answer for this but here is what I would put:

Atomic mass increases as you go from left to right. If you look at the periodic table, it would be between Sn and Sb. It would bet here because Sn is 118 and Sb is 121. Basing it off of Antimony and putting it in group 15, the properties are that it is metallic and is a poor conductor of heat. I would call it Stin, which would be shortened to St.

7 0
3 years ago
What is your guys ig?
makvit [3.9K]

Answer:

dont have one

Explanation:

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What occurs when chemical bonds break and new bonds form​
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I think energy is released
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3 years ago
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