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
Stella [2.4K]
3 years ago
13

Roughly how many electrons are there?

Chemistry
1 answer:
11111nata11111 [884]3 years ago
6 0

Answer:

1

Explanation:

You might be interested in
Relative to electrons and electron states, what does each of the four quantum numbers specify
Alla [95]

Answer:

(n, l, m sub l, m sub s)

N: principle quantum number (1,2,3,4,etc)

l: angular momentum quantum number, the shape (l has to be at least 1 less than n, but can be 0 depending on n)

M sub l: magnetic quantum number (l determines this number)

M sub s: spin quantum number (can only ever be 1/2 or -1/2)

Explanation:

8 0
3 years ago
A(n) ____________________ is a group of two or more atoms that are held together by chemical bonds. *
Kryger [21]

Answer:

A molecule is a group of two or more atoms that are held together by chemical bonds.

Explanation:

6 0
3 years ago
Strontium-90 is a radioisotope that will decrease in mass by one-half every 29 years. How many years will it take for a 10.0-gra
Lelechka [254]

Answer: It will take 29 years for a 10.0-gram sample of strontium-90 to decay to 5.00 grams

Explanation:

Radioactive decay process is a type of process in which a less stable nuclei decomposes to a stable nuclei by releasing some radiations or particles like alpha, beta particles or gamma-radiations. The radioactive decay follows first order kinetics.

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

Half life is represented by t_{\frac{1}{2}

t_{\frac{1}{2}=\frac{0.693}{\lambda}

\lambda = rate constant

Given : Strontium-90 decreases in mass  by one-half every 29 years , that is half life of Strontium-90  is 29 years.

As half life is independent of initial concentration, it will take 29 years for a 10.0-gram sample of strontium-90 to decay to 5.00 grams as the amount gets half.

7 0
3 years ago
What does the atomic number of each atom represent?
saw5 [17]
It's the number of Protons of that atom..
6 0
3 years ago
I need some help pls with science
elena-s [515]

Answer:

the answer to number 9 is A.

Explanation:

6 0
2 years ago
Other questions:
  • What led Thomson to decide that Dalton's atomic model needed to be revised?
    11·1 answer
  • Why is smoke filling up a room diffusion or not diffusion
    7·1 answer
  • What is the volume of 15.2 grams of SO2 at STP?
    8·1 answer
  • Which statement related to particle and wave properties of matter is correct? a. Interference patterns are observed when a wave
    6·1 answer
  • what is the inferred pressure, in million of atmospheres, in Earth's interior at a depth of 2900 kilometers?
    15·1 answer
  • Fluid does wat to each cell
    6·2 answers
  • Chloe’s teacher gives her and her lab partner soil samples from different parts of the city: the park, the area next to a pond,
    12·1 answer
  • Need help with this please thanks
    5·1 answer
  • Need help !
    7·1 answer
  • 6.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!