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ollegr [7]
2 years ago
9

Which of the following is true for a nuclear reaction? Electrons are lost Electrons are gained Identity of element changes Ident

ity of element remains same
Chemistry
2 answers:
yawa3891 [41]2 years ago
8 0

Answer: Identity of element changes

Explanation:

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

Transmutation is a chemical reaction in which nucleus of the atom undergoes a change by radioactive decay and thus result into formation of new nucleus. Thus the identity of the element changes.

_{92}^{235}\textrm{U}+_0^1\textrm{n}\rightarrow _{56}^{143}Ba+_{36}^{90}Kr+3_0^1\textrm{n}

anyanavicka [17]2 years ago
5 0

All nuclear chemistry revolves around changing the identity of base elements.

The answer is the third statement.

Because nuclear chemistry is changing base elements' identities, the atomic number/number of protons is what is changing.  While the number of electrons can change, your question is too general to know whether electrons are going to be gained, lost, or retained in the reaction.

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If a gas at a pressure of 600 mmHg and a volume of 200 mL is changed to 780 mmHg, then what will be the new volume?
svlad2 [7]
P1V1=P2V2
(600/760)(.200)=(780/760)x
x=.1538L or 153.8mL
8 0
3 years ago
You know that temperature measures how hot something is. What causes temperature?
Leya [2.2K]

Explanation:

A part of your brain called the hypothalamus controls your body temperature. In response to an infection, illness, or some other cause, the hypothalamus may reset the body to a higher temperature. So when a fever comes on, it's a sign that something is going on in your body.

4 0
2 years ago
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Balance the half reaction, c5o5 2-(g) â co3 2-(aq), taking place in basic media. which answer below describes how many hydroxide
Ludmilka [50]

Answer is: 20 ions, left side.

Unbalanced half reaction: C₅O₅²⁻(g) → CO₃²⁻(aq).

1) There are 5 carbon atoms on the left side of half reaction and 1 carbon atom on right, so first add coefficient 5 in fron of carbon dioxide to balance carbon atoms: C₅O₅²⁻(g) → 5CO₃²⁻(aq).

2) Because there are more oxygen atoms on the right, add OH⁻ ions on the left side of half reaction and water on the right: OH⁻(aq) + C₅O₅²⁻(g) → 5CO₃²⁻(aq) + H₂O(l).

3) Balance oxygen (25 atoms on boths side) and hydrogen (20 atoms on both side of half reaction) atoms:

Balanced half reaction: 20OH⁻(aq) + C₅O₅²⁻(g) → 5CO₃²⁻(aq) + 10H₂O(l).

7 0
2 years ago
The total pressure in a tank fill with a mixture of gasses : Oxygen, Helium, and Argon is 15.3 atm. The phe = 3.2 atm , Po= 7.4
Kisachek [45]

Answer:

Partial pressure of Ar = 4.7 atm

Explanation:

Total pressure of a mixture of gases = Sum of partial pressure of each gas

This mixture contains: O₂, He and Ar.

Total pressure = 15.3 atm

Total pressure = Partial pressure O₂ + Partial pressure of He + Partial pressure of Ar

15.3 atm = 7.4 atm + 3.2 atm + Partial pressure of Ar

Partial pressure of Ar = 15.3 atm - 7.4 atm - 3.2 atm

Partial pressure of Ar = 4.7 atm

8 0
3 years ago
Which statement is TRUE regarding the macroscopic and
damaskus [11]

Answer:

Chemists make observations on the macroscopic a scale that lead to conclusions about microscopic features

Explanation:

Many important chemical observations are made on the macroscopic scale. This is because, many of the scientific equipments available are not presently able to provide direct evidence about microscopic processes. Evidences obtained from macroscopic observations could serve as important insights into the nature of certain microscopic processes.

This is evident in the study of the structure of the atom. Most of the evidences that led to the deduction of the atomic structure were obtained from macroscopic evidence but ultimately provided important information about the microscopic structure of the atom.

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