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julia-pushkina [17]
3 years ago
15

Why does a diamond change directly from a solid state to a gaseous state?

Chemistry
2 answers:
TiliK225 [7]3 years ago
8 0
A diamond is formed from hydrogen bonds.

Dmitry_Shevchenko [17]3 years ago
4 0
I am not 100% sure, but it might be tremendous heat applied...

Plz thank!
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Question 4
vazorg [7]

Answer:

H(aq) + NO3 (aq) + HF(aq)

Explanation:

In the given mixture of HNO3 (Nitric Acid) and HF (hydrofluoric acid) in water  the major species present are H(aq) + NO3 (aq) + HF(aq).

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4 0
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How many atoms are in 35 grams of table salt
Slav-nsk [51]
Adopting the number of avogrado 6.02 * 10²³ / mol 
<span>Sodium chloride (table salt)</span> Molar Mass = 58.44 g / mol 
We will first have to find the number of moles in 35 grams of the element, like this: 
 
1 mol ----------------- 58.44 g 
X ---------------------- 35 g 
 
58.44 * x = 35 * 1 
58.44x = 35 
X = \frac{35}{58.44}
X = 0.598904...
X ≈ 0.60<span> mol </span>
 
Now we will find how many atoms there are in 0.60 mol of this element, like this: 
 
1 mol -------------------- 6.02 * 10²³ atoms 
0.60 mol ----------------- X 
 
X = 0.60 * 6.02 * 10²³ 
\boxed{\boxed{x \approx 3.612 * 10^{23}\:atoms}}\end{array}}\qquad\quad\checkmark
4 0
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Which of these is indication that a chemical reaction has occurred?
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