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
Ugo [173]
4 years ago
10

The sum of the numbers of protons and neutrons in a nucleus of an atom answer

Chemistry
1 answer:
kipiarov [429]4 years ago
6 0
An atom's mass number is the sum of the numbers of protons and neutrons in its nucleus. The atomic weight is the average mass of all of the isotopes of that element.
You might be interested in
How many neutrons are present in an atom of
Tamiku [17]
There’s going to be 8 neutrons presented
4 0
3 years ago
In at least three sentences, explain three disadvantages associated with hydrogen fuel use.
Dmitry_Shevchenko [17]

Here are some disadvantages, is that nitrogen dioxide is a toxic gas and it can still be harmful when ingested by human, also critics of hydrogen fuel cells argue that although these cells do not emit carbon after burning, they give out nitrogen dioxide and other emissions.

Hope this helps

7 0
3 years ago
Shay constructed a scientific model of the carbon cycle. She included plants, animals, industry, fossil fuels, and the atmospher
LenKa [72]

Answer:

no one can answer your question because you have shown no arrows.

3 0
3 years ago
9. At equilibrium a 2 L vessel contains 0.360
klio [65]

Answer:

Ke = 34570.707

Explanation:

  • H2(g) + Br2(g) → 2 HBr(g)

equilibrium constant (Ke):

⇒ Ke = [HBr]² / [Br2] [H2]

∴ [HBr] = (37.0 mol) / (2 L) = 18.5 mol/L

∴ [Br2] = (0.110 mol) / (2 L) = 0.055 mol/L

∴ [H2] = (0.360 mol) / (2 L) = 0.18 mol/L

⇒ Ke = (18.5 mol/L)² / (0.055 mol/L)(0.18 mol/L)

⇒ Ke = 34570.707

3 0
3 years ago
How many valence electrons are in an atom of phosphorus
dezoksy [38]
5 Valence electrons .......... Hope it helps, Have a nice day:)
5 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP
    6·2 answers
  • What what is any harm to the physical chemical or biological health of the ocean ecosystem
    7·1 answer
  • Describe how the energy of a shear wave relates to the direction of particle motion.
    10·1 answer
  • These substances are all ____. H2O2 Li NaCl O2 Elements Pure Substances Molecules Compounds
    8·2 answers
  • Please help<br><br> What causes a wave to have a higher amplitude?
    14·2 answers
  • When you apply 1000 joules of energy to 50 grams of water its temperature changes to 30 degrees . What was the initial temperatu
    13·1 answer
  • Can someone please try to help me ​
    9·1 answer
  • :) hi,can you help me its really easy
    13·1 answer
  • Can yall assist me with this lab? It is really screwing me up... No spam!! the only part that I need is the last page. I will ma
    13·1 answer
  • The concentration of hydronium ions is greater than 1 x 10^−7 for acidic solutions. True False
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!