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
aleksandr82 [10.1K]
3 years ago
11

PLEASE HELP!

Chemistry
1 answer:
charle [14.2K]3 years ago
3 0

Answer: D the average mass of all the isotopes

Explanation:

You might be interested in
Chose one that best fits the question
kramer

Answer:

Explanation:

The fourth one.

6 0
3 years ago
Read 2 more answers
How many electrons in an atom could have these sets of quantum numbers?
Alecsey [184]
Ml=−2,−1,0,+1,+2.
<span>Since each of these orbitals can hold a maximum of </span>two electrons<span>, one having spin-up and one having spin-down, a total of </span>10 electrons<span> can share the quantum numbers n = 4 and l = 2</span>
8 0
3 years ago
Predict the missing particle or nuclide.
Advocard [28]

Answer:

beta minus emission

Explanation:

Beta radiations:

Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.

The mass of beta particle is smaller than the alpha particles.

They can travel in air in few meter distance.

These radiations can penetrate into the human skin.

The sheet of aluminum is used to block the beta radiation

²³⁹₉₃Np→ ²³⁹₉₄Pu + ⁰₋₁e

The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.

8 0
3 years ago
What type(s) of intermolecular forces are expected between seh2 molecules?
bija089 [108]
London dispersion
dipole-dipole
7 0
3 years ago
Read 2 more answers
Which of the following statements correctly relates mutations and survival rates of plants?
Tasya [4]
Answer is: <span>Mutations sometimes improve the chances of survival for a plant.
</span>Mutations are very important because they change <span>variability in populations and in that way enable evolutionary change.
</span>There are three types of mutations:
1) good or advantageous mutations - <span> improve the chances of survival for a plant.
2) </span>bad or deleterious - decrease the chances of survival for a plant.
3) neutral -  not affect he chances of survival for a plant.
3 0
4 years ago
Other questions:
  • How many moles of Pb(NO3)2 are required if 8 moles of PbCl2 are produced
    12·1 answer
  • The data listed below are for mechanical waves. Which wave has the greatest energy? amplitude = 7 cm; wavelength = 12 cm; period
    14·2 answers
  • Penn State Civil and Environmental Engineering Department just built a super-duper coal-fired power plant in Altoona, PA. It is
    5·1 answer
  • If the density is 0.1 g/cm^3 and the volume is 5cm^3, what is the mass?
    7·1 answer
  • The combustion of Methane produces energy. Where does this energy come from
    13·2 answers
  • Ow do carbon-12 and carbon-13 differ?
    15·1 answer
  • Define the molecular of a substance​
    10·1 answer
  • Which 3 things are always equal for an atom?
    7·1 answer
  • Polly wants a white cracker
    7·1 answer
  • Octasilicon nonanitride --- Covalent compound<br><br> What is the chemical formula?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!