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grin007 [14]
3 years ago
7

What determines the transition between different states of matter?

Chemistry
1 answer:
Scrat [10]3 years ago
4 0

Answer:

Phase transition is when a substance changes from a solid, liquid, or gas state to a different state. Every element and substance can transition from one phase to another at a specific combination of temperature and pressure.

Explanation:

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Help please bjfkboweugfowbs
Anit [1.1K]

Answer:

B is correct answer because The enthalpy is negative so this means the reaction produces heat and the reaction is exothermic

5 0
3 years ago
Alanine is an amino acid with the formula C3H7NO2. How many atoms in all are in each molecule of alanine?
ZanzabumX [31]

Answer:

12

Explanation:

8 0
3 years ago
ASAP Two different atoms have four protons each and the same mass. However, one has a negative charge while the other is neutral
Vinvika [58]

Answer:

Explanation:

Just a little fundamental knowledge:

   Protons are positively charged particles

   Neutrons do not carry any charges

  Both protons and neutrons are located in the nucleus of an atom. They determine the mass of any atom.

 Atoms having the same mass will have the same number of protons and neutrons. Collectively, the number is called mass number.

 Electrons are negatively charged particles orbiting round the nucleus of an atom. They take up the the bulk volume of the atom. They do not add to the weight of an atom.

The protons, neutrons and electrons are the three fundamental particles in an atom.

Two given atoms:

    A = 4 protons and negatively charge

    B = 4 protons and neutral

Location:

  • By default, in all atoms, the protons and neutrons resides in the nucleus.
  • The electrons are located in the orbitals round the nucleus

Possible number of subatomic particles:

For atom A;

     Protons  = 4

     Electrons  = 4

    Neutrons  cannot be determined.

Note: in a neutral atom, the number of protons and electrons are the same

For atom B:

    Protons = 4

    Electrons = 4 + x where x is the number of electrons gained

    Neutrons  cannot be determined.

When an atom becomes charged, it has lost or gained electrons. A negative charge depicts an atom the has gained additional electrons.

The value of x, is always a positive integer greater than 0 and less than 7

   Electrons can be 5, 6, 7, 8, 9 or 10

When the number of electrons reaches 10, the atom is stable.

4 0
3 years ago
A copper penny has a mass of 2.6 g Assuming it is pure copper, how much of this mass is contributed by a) the neutrons in the co
Lelu [443]
The copper has a normal atomic mass of 63.546

it's atomic number is 29

it's atomic mass is 63 disregarding other mass in atom
Atomic mass - atomic number = neutron mass

63 - 29  = 34

Hope this helps
6 0
4 years ago
Read 2 more answers
Determine the number of protons, electrons, neutrons, valence electrons and valency in Oxygen atom (O) and Oxide ion (O2-). Comp
wolverine [178]

Answer:

<em />

<em>                    Atom (O)           Ion (O²⁻)</em>

<em>Protons             8                       8</em>

<em>Electrons          8                      10</em>

<em>Neutrons          8                       8   </em>      ← only for the oxygen-16 isotope.

* The number of neutrons depends on the specific isotope. It is equal to the mass number of the isotope less the number of protons.

Explanation:

<em>Oxygen</em> is the element with atomic number 8. That means that the oxygen atoms have 8 protons.

Protons have relative positive charge equal to +1 and electrons have relative negative charge -1: same magnitude opposite sign.

Thus, the neutral oxygen, O, has also 8 electrons and 8 protons.

As per the number neutrons it depends on the specific isotope.

The isotopes are identified by the mass number, which is the number of protons plus neutrons. For instance, oxygen-16 isotope has mass number 16, 8 protons and 8 neutrons, while oxygen-15 isotope has mass number 15, 8 protons and 7 neutrons.

Oxide ion O²⁻ is the oxygen ion with -2 charge, meaning that it has 2 more electrons than protons. Then, it has 8 protons and 10 electrons, again the number of neutrons depend of the specific isotope.

The stability of an atoms or ion refers to its trend to remain in the same state or react to form another species. The ions O²⁻ are less stable than the neutral atoms O, because the negative charge will be attracted to any positive ion so ti will react faster than the neutral oxygen atom (O).

8 0
4 years ago
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