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
sasho [114]
3 years ago
13

Nucleus of an atom is negatively charged.why?​

Chemistry
1 answer:
OleMash [197]3 years ago
8 0

Answer:

In this regard, is the nucleus positively or negatively charged? The nucleus, that dense central core of the atom, contains both protons and neutrons. Electrons are outside the nucleus in energy levels. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge.

Explanation:

Branliest maybe ? :)

You might be interested in
Ill upvote please help
NARA [144]
Hello there.

<span>Find the average acceleration of a northbound subway train that slows from 12 m/s to 9.6 m/s in 0.9 s

</span><span>2.7 m/s2
</span>
3 0
4 years ago
An unknown gas diffuses 0.25 times as fast as helium. What is it’s molar mass? What steps are to be done?
dmitriy555 [2]

Answer:

64.0 g/mol.

Explanation:

  • Thomas Graham found that, at a constant  temperature and pressure the rates of effusion  of various gases are inversely proportional to  the square root of their masses.

<em>∨ ∝ 1/√M.</em>

where, ∨ is the rate of diffusion of the gas.

M is the molar mass of the gas.

<em>∨₁/∨₂ = √(M₂/M₁)</em>

∨₁ is the rate of effusion of the unknown gas.

∨₂ is the rate of effusion of He gas.

M₁ is the molar mass of the unknown gas.

M₂ is the molar mass of He gas (M₂ = 4.0 g/mol).

<em>∨₁/∨₂ = 0.25.</em>

∵ ∨₁/∨₂ = √(M₂/M₁)

∴ (0.25) =√(4.0 g/mol)/(M₁)

<u><em>By squaring the both sides:</em></u>

∴ (0.25)² = (4.0 g/mol)/(M₁)

∴ M₁ = (4.0 g/mol)/(0.25)² = 64.0 g/mol.

4 0
3 years ago
What’s a physical change in the movie theader
kirill [66]
A physical change that may happen in a movie theater is:

You accidentally step on a piece of popcorn.

That piece of popcorn is still made up of the same things but LOOKS different. Therefore, the piece of popcorn went through a physical change.

I hope this helps!
6 0
3 years ago
Give the volume indicated. Be sure to include all significant figures.<br> 9.2<br> 9.16<br> 9.26
Gemiola [76]

Answer:

The volume indicated would be closest to 9.16

3 0
3 years ago
Read 2 more answers
I WILL MAKE U THE BRAINLIEST !!
bogdanovich [222]

Answer:

Try using Ptable or chemicalaid

Explanation:

Ptable is a great website that shows you a dynamic periodic table. It can show you which elements are Halogens, Alkali metals, transition metals, noble gases, and etc!

Chemicalaid is a nice website to find out more information about specific elements, it also lists every element on the periodic table.

5 0
3 years ago
Other questions:
  • Which factors cause a rising tide? A. The moon's gravity and Earth's rotation B. Density differences due to salinity and tempera
    10·2 answers
  • PLEASE HELP 15 PTS!!!!! How can chemistry be used to improve energy efficiency?
    9·1 answer
  • The number of particles in one mole of a substance is:
    5·1 answer
  • What is the ph of pure water at 40.0°c if the kw at this temperature is 2.92 × 10-14?
    11·1 answer
  • Draw the structure of two alkenes that would yield 1-methylcyclohexanol when treated with Hg(OAc)2 in water, then NaBH4:
    12·2 answers
  • Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has the unw
    8·1 answer
  • What is the elevation of hachure line A?<br><br> 125 feet<br> 75 feet<br> 100 feet<br> 50 feet
    13·2 answers
  • During the process of photosynthesis, green implants produce
    15·1 answer
  • What are homogeneous mixture and heterogeneous mixture ? ​
    11·2 answers
  • Two different bromide solutions are mixed with each other: Solution 1 is an aqueous solution of 4.85 g aluminum bromidein 150. m
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!