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ollegr [7]
3 years ago
8

50 POINTS I NEED HELP!!!!!!!!!!! ASAP

Chemistry
2 answers:
daser333 [38]3 years ago
5 0
The answer would be option C) diffraction.

I hope this helps! :)
m_a_m_a [10]3 years ago
3 0
Hello,


Your answer is: C.Diffraction

Explanation: Once an X-ray hits between atoms in crystals,
they take advantage of this behavior. They do this because 
that is when diffraction is mostly used and you can see is on a 
reader more clearer.


Hope this helps

-Jurgen :D
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Hess’s law
Delvig [45]

From the statement of Hess' law, the enthalpy of the reaction A---> C is +90 kJ

<h3>What is Hess' law?</h3>

Hess' law of constant heat summation states that for a multistep reaction, the standard enthalpy of reaction is always constant and is independent of the pathway or intermediate routes taken.

From Hess' law, the enthalpy change for the reaction A ----> C is calculated as follows:

A---> C = A ---> B + B ---> C

ΔH of A---> C = 30 kJ + 60 kJ

ΔH = 90 kJ

Therefore, the enthalpy of the reaction A---> C is +90 kJ

The above reaction A---> C can be shown in the enthalpy diagram below:

A -------------------> C (ΔH = +90 kJ)

\ /

\ / (ΔH = +60 kJ)

(ΔH = +30 J) \ /

> B

Learn more about enthalpy and Hess law at: brainly.com/question/9328637

8 0
2 years ago
Which statement is true for all minerals
nekit [7.7K]

What are the answer choices


8 0
3 years ago
Which statement is true about SO4 2− ?
Nonamiya [84]
It is a poly atomic anion because it has more than one atom and a negative charge
4 0
3 years ago
Read 2 more answers
A student shines a flashlight on a mirror.
irga5000 [103]

Answer:

a

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7 0
3 years ago
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Mercury chloride is a commercial fungicide. If the molar mass is 470 g/mol and the percent composition is 85.0% Hg and 15.0% Cl,
ElenaW [278]
Data: molar mass 470 g/mol

Percent composition:

Hg = 85.0%
Cl = 15.0%

Solution:

1)  Convert % to molar ratios

A. Base: 100 g

=> Hg = 85.0 g / 200.59 g/mol = 0.4235 mol

     Cl = 15.0 g / 35.45 g/mol = 0.4231 mol

B. divide by the higher number and round to whole number

Hg = 0.4325 / 0.4231 = 1.00

Cl = 0.4231 / 0.4231 = 1.00

=> Empirical formula = Hg Cl

2) Find the mass of the empirical formula:

HgCl: 200.59 g/mol + 35.45 g/mol = 236.04

3) Determine how many times is the empirical mass contained in the molecular mass:

470 g/mol / 236.04 = 1.99 ≈ 2

=> Molecular formula = Hg2 Cl2.

Answers:

Empirical formula HgCl
Molecular Formula Hg2Cl2
6 0
3 years ago
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