1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
m_a_m_a [10]
3 years ago
5

3. 79,789kJ = (293k) (377kJ)

Chemistry
1 answer:
KatRina [158]3 years ago
5 0

the anwser would most likely be j=0

You might be interested in
Which best explains how insects help flowering plants in reproduction?
ss7ja [257]

Answer:

d is right hope this helps:)

5 0
3 years ago
Read 2 more answers
Fireworks exploding in the sky and giving off light are an example of a(n) _____.
Serggg [28]
Exothermic change. Because the firework when it exploded, released energy in the form of light. In exothermic changes energy is released, and in endothermic changes energy is absorbed.

- This wouldn't be a physical change, but instead a chemical change. A clue that it is a chemical change is that energy was given off.
7 0
3 years ago
Read 2 more answers
There are three subatomic particles found inside atoms. Two of the subatomic particle have a charge of positive or negative. The
NARA [144]

Neutrons don't have a charge. They are neutral

7 0
3 years ago
Read 2 more answers
Question 15 (1 point)
Digiron [165]

Answer:

Atoms are electrically neutral because the number of protons, which carry a 1+ charge, in the nucleus of an atom is equal to the number of electrons, which carry a 1- charge, in the atom. The result is that the total positive charge of the protons cancels out the total negative charge of the electrons so that the net charge of the atom is zero. Most atoms, however, can either gain or lose electrons; when they do so, the number of electrons becomes different from the number of protons in the nucleus. The resulting charged species is called an ion.

Cations and anions

When a neutral atom loses one or more electrons, the total number of electrons decreases while the number of protons in the nucleus remains the same. The result is that the atom becomes a cation—an ion with a net positive charge.

The opposite process can also occur. When a neutral atom gains one or more electrons, the number of electrons increases while the number of protons in the nucleus remains the same. The result is that the atom becomes an anion—an ion with a net negative charge. We can illustrate this by examining some very simple cations and anions, those formed when a single hydrogen atom loses or gains an electron.

Note: Hydrogen is actually somewhat unusual in that it readily forms both cations and anions. Most elements much prefer to form only one or the other. In terms of its electron configuration, can you explain why hydrogen can form both cations and anions? Feel free to post in the comments at the end of the article!

A hydrogen cation, a hydrogen atom, and a hydrogen anion.

A hydrogen cation, a hydrogen atom, and a hydrogen anion.

Classification cation neutral atom anion

No. of protons 111 111 111

No. of electrons 000 111 222

Net charge 111++plus 000 111-−minus

If a neutral hydrogen atom ( \text{H}Hstart text, H, end text, center) loses an electron, it becomes a hydrogen cation ( \text{H}^+H  

+

start text, H, end text, start superscript, plus, end superscript, left). Conversely, if the neutral \text{H}Hstart text, H, end text atom gains an electron, it becomes a hydrogen anion ( \text{H}^-H  

−

start text, H, end text, start superscript, minus, end superscript, right), also known as a hydride ion. Image credit: adapted from Boundless Learning, CC BY-SA 4.0.

In the center column, we have a diagram of a single, neutral hydrogen atom. It contains one proton and one electron; thus, its net charge is zero. If hydrogen loses its electron, it forms the cation \text{H}^+H  

+

start text, H, end text, start superscript, plus, end superscript (left column). The \text{H}^+H  

+

start text, H, end text, start superscript, plus, end superscript cation has a net charge of 1+ from the one proton in the nucleus since there are no electrons to cancel out the positive charge. If neutral hydrogen gains an electron, it forms the anion \text{H}^-H  

−

start text, H, end text, start superscript, minus, end superscript (right column). The \text{H}^-H  

−

start text, H, end text, start superscript, minus, end superscript anion has a net charge of 1- because it has one extra electron compared to the total number of protons.

Explanation: Hopes this gives a better explanation on them!

6 0
3 years ago
When the water inside a living cell freezes, the ice crystals damage the cell. The wood frog is a unique creature that can survi
professor190 [17]
But i think its B but i need answer too
4 0
3 years ago
Other questions:
  • What are the characteristics of a virtual image? Check all that apply.
    14·2 answers
  • The density of a 20.3 M CH 3OH (methanol) solution is 0.858 g/mL.
    10·1 answer
  • Convert 30 g of Na O to liters.​
    10·2 answers
  • Balance the chemical equation. ___Mg + ___Fe2O^3 -> ___MgO + ___Fe
    14·1 answer
  • How many protons , electrons and neutrons does 18F- have
    7·1 answer
  • A mixture that has the same composition through out is called
    6·2 answers
  • How is structure linked to function? <br><br><br><br><br> please no upload files.
    15·1 answer
  • What is the reducing agent in the following reaction?
    10·1 answer
  • How many formula units are in 0.0022 mol of NaCl (it’s urgent plz)
    11·1 answer
  • A compound has an empirical formula C₂H4S.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!