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erastova [34]
3 years ago
12

¿Por qué el volcán causa una explosión?

Chemistry
1 answer:
never [62]3 years ago
4 0
Why does the volcano cause an explosion?
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Alchemists were medieval scholars and philosophers who were the forerunners of modern-day chemists. many tried repeatedly to tra
AlladinOne [14]

Answer is: because they were using simple chemical reactions to transform elements, but that is possible only with nuclear reactions, which in that time were not possible to conduct.

Nuclear reactions can produce new elements, because number of protons and neutrons is changed, lead and gold have different atomic and mass numbers.

The electrons of an atom participates in a chemical reaction, chemical reactions involve the rearrangement of electrons, because there is transfer, loss, gain and sharing of electrons in chemical reactions, new elements are not formed.


8 0
2 years ago
Which of the following represent a mixture?
7nadin3 [17]
The answer is B NaCI solid
6 0
2 years ago
1. Calculate the energy of a photon with a frequency of 3x1015 Hz.<br> ?????
Afina-wow [57]

Answer:

1.99 x 10⁻¹⁸J

Explanation:

Given parameters:

Frequency of the wave  = 3 x 10¹⁵Hz

Unknown:

Energy of the photon  = ?

Solution:

To solve this problem, we use the expression below;

     E  = hf

Where E is the energy, h is the Planck's constant and f is the frequency

Now insert the parameters and solve for E;

     E  = 6.63 x 10⁻³⁴ x 3 x 10¹⁵ = 19.9 x 10⁻¹⁹J or 1.99 x 10⁻¹⁸J

6 0
3 years ago
Which element is humus especially rich in?<br>oxygen <br>carbon <br>nitrogen <br>or tungsten​
amid [387]

Answer:

Carbon

Explanation:

looked it up

5 0
3 years ago
how much heat is absorbed when 15.0 g of liquid water is heated until the temperature increases by 16.0.
svlad2 [7]
N snsnnsnansnannnans
8 0
2 years ago
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