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
docker41 [41]
3 years ago
15

How many neutrons does element X have if its atomic number is 31 and its mass number is 80?

Chemistry
1 answer:
MrRissso [65]3 years ago
5 0

49 neutrons in each nucleus.

<h3>Explanation</h3>

For each nucleus:

Mass number = Number of protons + Number of neutrons.

The atomic number of a nucleus is the same as its number of protons. The atomic number of the nucleus here is 31. There are 31 protons in each nucleus.

  • Mass number = 80;
  • Number of protons = Atomic number = 31;
  • The number of neutrons is to be found.

Again,

Mass number = Number of protons + Number of neutrons.

80 = 31 + Number of neutrons.

Number of neutrons = 80 - 31 = 49.

You might be interested in
Determine the number o( bonding electrons and the number of nonbonding electrons in the structure of CO_2. Enter the number of b
Rom4ik [11]

NOF (6,12)

CO2 (8,8)

BeF (4,12)

7 0
3 years ago
Which type of radiation particle, emitted from a nuclear reaction, is most similar to a helium nucleus?
olasank [31]
Alpha particles because two protons and two neutrons 
6 0
3 years ago
Read 2 more answers
Volume increases, pressure stays the same, temperature
Mila [183]
Temperature decreases (?)
4 0
3 years ago
Indicar la cantidad de sustancia en: a) 2.0L de un gas en C.N; b) 22.4 mL de un gas a 755 torr y 26 grados celsius?
nekit [7.7K]

Answer:

El termopar B presenta un mayor grado de dispersión y también es más preciso. ... (c) La estimación para T = 175 ° C es probablemente la más cercana al valor real, porque el ... (cm3). Flujo de masa. Velocidad. (kg / min). Diferencia. Duplicar. (Di). Yo y yo. 2. 1 ... atm de gas. 2. 2. 2 f. 3. 2 f f. 30 14,7 lb 20 pulg. 4 14,7 lb 24 pulg 392 lb 7,00 10 lb pulg.

8 0
2 years ago
Which of the following are products of the reaction listed? Zn + 2HCI
Alexus [3.1K]

Answer:

uh A.)? [ZnCI2+H2]? /////////

5 0
3 years ago
Other questions:
  • In order from LEAST density to most in order
    10·1 answer
  • Which of the following would lead to the smallest entropy loss in the surroundings?
    10·2 answers
  • Which one have less friction loss ?
    15·1 answer
  • A 2.567-g sample of a monoprotic acid was dissolved in water. It took 15.24 mL of a 0.1578 M NaOH solution to neutralize the aci
    8·1 answer
  • List the specific sources of non renewable energy used in 2006
    12·1 answer
  • rank the 4 gases (air,exhaled air, gas produced from decomposition of H202, gas from decomposition of NaHCO3) in order of increa
    7·1 answer
  • The pressure of sulfur dioxide in a container is 159 kpa. what is this pressure in atmospheres?
    9·1 answer
  • Is calcium and chlorine am Ionic bond?
    6·2 answers
  • What was one idea Dalton taught about atoms?
    10·2 answers
  • If you lose half of your mass, its gravity will.. causing the tides to ..
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!