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Rasek [7]
3 years ago
10

Who can help with my edgnuity ?

Chemistry
2 answers:
Misha Larkins [42]3 years ago
8 0

Answer:

it depends on the subject but i can see what i can do

Explanation:

Inessa05 [86]3 years ago
4 0

Answer:

anyone

Explanation:

who nows what it is

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A topaz crystal has an interplanar spacing (d) of 1.36 Å (1 Å =1×10^[−10] m). Calculate the wavelength of the X-ray that should
bija089 [108]

Answer:

7.0*10-11m or 70Å

Explanation:

From Bragg's equation, w=2dsinx/n

Since all the parameters are specified in the question, we can easily go ahead to obtain the wavelength but we must convert the spacing given in angstroms to meters using the conversion factor provided as shown in the solution below:

7 0
3 years ago
The out side t layer is the linnets layer in the earth
Vera_Pavlovna [14]
The crust is the outside layer and also the thinnest.
5 0
2 years ago
DUEEEEE IN 1 minutess!!! BEING TIMED!!
melomori [17]

Answer:

pH = 13

The higher the pH, the more basic.

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6 0
3 years ago
A 25.00-mL aliquot of a nitric acid solution of unknown concentration is pipetted into a 125-mL Erlenmeyer flask and 2 drops of
Semenov [28]

Answer:

0.0611M of HNO3

Explanation:

<em>The concentration of the NaOH solution must be 0.1198M</em>

<em />

The reaction of NaOH with HNO3 is:

NaOH + HNO3 → NaNO3 + H2O

<em>1 mole of NaOH reacts per mole of HNO3.</em>

That means the moles of NaOH used in the titration are equal to moles of HNO3.

<em>Moles HNO3:</em>

12.75mL = 0.01275L * (0.1198mol / L) = 0.0015274 moles NaOH = Moles HNO3.

In 25.00mL = 0.025L -The volume of the aliquot-:

0.00153 moles HNO3 / 0.025L =

<h3> 0.0611M of HNO3</h3>
7 0
3 years ago
Technetium-99 is an ideal radioisotope for scanning organs because it has a half-life of 6.0 h and is a pure gamma emitter. supp
Nadusha1986 [10]

Answer: 20 mg Te-99 remains after 12 hours.

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N(t) = 20 mg remains after 12 hours

3 0
2 years ago
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