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galina1969 [7]
2 years ago
7

Why are xrays used to probe the crystal structure of a material

Chemistry
1 answer:
ioda2 years ago
8 0

Answer:

Because X-rays have wavelengths similar to the size of atoms

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Write the expected ground electronic configuratio for the noble gas with electron occupying 4f orbitals?
lisov135 [29]

Answer:

There are main six noble gases in the periodic table. The filling of 4f-orbitals occurs after 6s orbitals. The noble gas that belongs to the sixth period is Radon. Its electronic configuration is [ X e ] 6 s 2 4 f 14 5 d 10 6 p 6  .

Therefore, the name of noble gas is Radon.

3 0
2 years ago
A gas made up of atoms escapes through a pinhole times as fast as gas. Write the chemical formula of the gas.
Artemon [7]

A gas made up of atoms escapes through a pinhole 0.225times as fast as gas. Write the chemical formula of the gas.

Answer:

Explanation:

To solve this problem, we must apply Graham's law of diffusion. This law states that "the rate of diffusion or effusion of a gas is inversely proportional to the square root of its molecular mass at constant temperature and pressure".

Mathematically;

                 \frac{r_{1} }{r_{2} }  = \frac{\sqrt{m_{2} } }{\sqrt{m_{1} } }

r₁ is the rate of diffusion of gas 1

r₂ is the rate of diffusion of gas 2

m₁ is the molar mass of gas 1

m₂ is the molar mass of gas 2

let gas 2 be the given H₂;

   molar mass of H₂ = 2 x 1 = 2gmol⁻¹

rate of diffusion is 0.225;

  i .e r1/r2 = 0.225

          0.225 = √2  /  √ m₁

           0.225 = 1.414 / √ m₁

           

       √ m₁  = 6.3

           m₁  = 6.3²  = 39.5g/mol

The gas is likely Argon since argon has similar molecular mass

5 0
3 years ago
Explain why there might be a change in the density of a forged product as compared to that of the cast blank.
kkurt [141]

Answer:

Forged parts are often tougher than cast parts. This can be determined by performing tensile tests on various areas on the parts. Additionally, the microstructures of forged and cast parts can be used to determine if a part was forged or cast. The microstructure of a cast part will have a more uniform grain structure.

Explanation:

4 0
2 years ago
Someone please help me sort these out for either if they are Heterogenous, solution, suspension, or colloid. Tuna casserole, gre
Sphinxa [80]
Heterogeneous-a mixture of two or more things
solution-a substance that dissolves
suspension-mixture where solid particles do not dissolve
colloid-does not settle and cannot be seperated

Heterogeneous
- tuna casserole
-chocolate chip cookies
-gelatin dessert
-green salad
Solution
-oil (?) depends 
Suspension
-vinegar salad dressing
-oil (?) it could go in either catagory
Colloid
-vinegar salad dressing
-oil (?)

7 0
3 years ago
1. What elements are carbohydrates generally composed of?
Llana [10]
The correct answer is  hydrogen<span>, and </span>oxygen<span>. </span>
4 0
3 years ago
Read 2 more answers
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