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Naddik [55]
3 years ago
13

Deuterium is an isotope of hydrogen. the nucleus of a deuterium atom consists of one proton and one neutron. when 2 deuterium nu

clei fuse, helium-3 is formed, and a neutron is emitted. which equation illustrates this process?
Chemistry
1 answer:
ozzi3 years ago
3 0
D + D → ³He + n + E

or
²H + ²H → ³He + n + E

D=²H
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Water has a specific heat of 4.186 J/g*C. How much energy would be required to raise the temperature of 10 g of water by 10 C?
Sladkaya [172]

Energy(heat) required to raise the temperature of water : 418.6 J

<h3>Further explanation  </h3>

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

Specific heat of water = 4.186 J/g*C.

∆T(raise the temperature) : 10° C  

mass = 10 g

Heat required :

\tt Q=m.c.\Delta T\\\\Q=10\times 4.186\times 10\\\\Q=418.6~J

8 0
3 years ago
which caused a change in matter. Select each procedure that is likely a chemical change. Salt crystals were crushed into a fine
olga55 [171]

Procedures that are likely a chemical change are:

- Bubbles were produced when iron was placed in acid.

- Two liquids were combined, and a solid appeared

- A white substance turned blue when water was added.


5 0
3 years ago
Read 2 more answers
Assuming an electron is a hydrogen atom can undergo any of the transitions below, thus changing its energy. Which transition is
inn [45]

Answer:

n = 3 to n = 5

Explanation:

According to the Bohr's model of the atom, electrons in an atom absorb energy to move from a lower to higher energy level.

We must note that as we progress away from the nucleus, the energy levels of electrons become closer together. The energy difference between successive levels decreases and the wavelength of light associated with such transitions become longer.

Hence,the absorption of light of the longest wavelength corresponds to n = 3 to n = 5

.

5 0
2 years ago
If another student joins the game and stands behind the two students
Mandarinka [93]

Answer:

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4 0
2 years ago
When utilizing a transmission electron microscope, why is it necessary to stain the specimen with heavy metal salts?
Schach [20]
Staining specimen with heavy metal salts (e.g. tungsten, molybdenum) allows you to see the specimen better with higher contrast when electron beam deflects off of your sample.
6 0
3 years ago
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