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
Deffense [45]
4 years ago
7

What does the symbol H stand for

Chemistry
1 answer:
muminat4 years ago
4 0

Answer:

enthalpy

Explanation:

If it is used with a triangle in front, (delta H), that means the change in enthalpy. Delta H= (m)(s)(Delta T).  m=mass of products, s=heat of the products, Delta T = change in temperature.

Hope that helps

You might be interested in
A student is creating a table that compares theories, hypotheses, and laws.
Svetach [21]
It's testable
(adding random stuff right now to make the answer longer but the answer is it's testable

7 0
4 years ago
Read 2 more answers
Involves combining of nuclei:
bogdanovich [222]

Explanation:

Involves combining of nuclei:  Nuclear fusion

Nuclear fusion is a radioactive reaction  in which small atomic nuclei combines into larger ones with the release of a large amount of energy. The energy released is used to furnish a series of chain reactions.

Produces dangerous radioactive waste:  Nuclear fission

Nuclear fission is used in powering most nuclear power plants. The products of these reactions are radioactive in nature. They are very dangerous to human health and the environment at large.

Have high activation energies:  Nuclear fusion

The activation energy is the energy barrier that must be overcome before a reaction starts. Nuclear fusion reactions require very high amount of energy input to overcome the activation needed to start the reaction.

Releases large amounts of energy:  Nuclear reactions

Both nuclear fusion and fission releases large amount of energy.

Occurs in the stars:  Nuclear fusion

Nuclear fusion occurs in stars and they involve the combination of atomic nuclei to form larger ones.

Drives chemical plants: Nuclear fission

Chemical plants uses electricity and nuclear power plants can produce electricity through nuclear fission.

Learn more:

Nuclear reactions brainly.com/question/9566647

#learnwithBrainly

7 0
4 years ago
Read 2 more answers
Need help ASAP!!!! what is the value (angle) for the C=C=O bond in Ketene i.e. CH2=C=O
stepan [7]

Answer:

180^\circ by the VSEPR theory.

Explanation:

This question is asking for the bond angle of the \rm C=C=O bond in \rm H_2C=C=O. The VSEPR (valence shell electron pair repulsion) theory could help. Start by considering: how many electron domains are there on the carbon atom between these two bond?

Note that "electron domains" refer to covalent bonds and lone pairs collectively.

  • Each nonbonding pair (lone pair) of valence electrons counts as one electron domain.
  • Each covalent bond (single bond, double bond, or triple bond) counts as exactly one electron domain.

For example, in \rm H_2C=C=O, the carbon atom at the center of that \rm C=C=O bond has two electron domains:

  • This carbon atom has two double bonds: one \rm C=C bond and one \rm C=O bond. Even though these are both double bonds, in VSEPR theory, each of them count only as one electron domain.
  • Keep in mind that there are only four valence electrons in each carbon atom. It can be shown that all four valence electrons of this carbon atom are involved in bonding (two in each of the two double bonds.) Hence, there would be no nonbonding pair around this atom.

In VSEPR theory, electron domains around an atom repel each other. As a result, they would spread out (in three dimensions) as far away from each other as possible. When there are only two electron domains around an atom, the two electron domains would form a straight line- with one domain on each side of the central atom. (To visualize, consider the three atoms in this \rm C=C=O bond as three spheres on a stick. The central \rm C atom would be between the other \rm C atom and the \rm O atom.)

This linear geometry corresponds to a bond angle of 180^\circ.

3 0
3 years ago
What is the purpose of stirring a solution while it is being heated?.
Temka [501]
Stirring and agitating chemical reactions is desirable and stirring reflux systems or any system under heating is necessary to a distribute the heat evenly throughout the system and b) to prevent splashing and boilovers.
5 0
3 years ago
What is a period on the Periodic Table? *
ella [17]

Answer:

Explanation:En la tabla periódica los elementos están ordenados de forma que aquellos con propiedades químicas semejantes, se encuentren situados cerca uno de otro. Los elementos se distribuyen en filas horizontales, llamadas períodos.

8 0
3 years ago
Other questions:
  • Which sample contains the most concentrated solution of hydrochloric acid (HCl)?
    12·1 answer
  • THIS iS A Ratio Problem
    5·1 answer
  • What is the compound formed from ca2 and no3-1?
    7·1 answer
  • What is the density of copper?
    15·1 answer
  • The energy of moving particles in a substance
    7·1 answer
  • Balance this equation-<br> Fe + O2 Fe3 O4
    8·1 answer
  • How many protons does a nitrogen atom have?<br> 07<br> 0 14<br> 8<br> 05
    6·2 answers
  • Dipole-dipole interactions are (weaker than, stronger than, equal to) hydrogen bonds.
    9·1 answer
  • This isn’t really a school related question. but can you workout with a belly piercing?
    8·2 answers
  • Why are there different ways to describe an atom? What are the ways discussed in the reading, and what are the benefits and draw
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!