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
faltersainse [42]
4 years ago
15

How many neutrons does element X have if its atomic number is 36 and its mass number is 74?

Physics
2 answers:
Shtirlitz [24]4 years ago
7 0

There are a truly enormous number of neutrons in any sample of Element X.

Why, EVERY ATOM of Element X has 38 of them in its nucleus !
kari74 [83]4 years ago
3 0
The atomic number Z of an element is the number of protons it contains (and in an atom it is equal to the number of electrons). The mass number M is close to the mass of one mol of the substance but it is defined as the number of protons and neutrons in the nucleus of the atom; there, the main mass of the atom is contained. Hence, N=M-Z=74-36=38(since M counts both protons and neutrons while Z only protons). Thus, it has 38 neutrons.
You might be interested in
Two different simple harmonic oscillators have the same natural frequency (f=8.80 Hz) when they are on the surface of the Earth.
bekas [8.4K]

Answer:

8.80 Hz

Explanation:

The frequency of a loaded spring is given by

f=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}

where k and m are the spring constant and the mass of the load respectively. The values of these do not change because they are internal properties of the components of the system.

Hence, the frequency of the vertical spring mass does not change and is 8.80 Hz.

On the other hand, the frequency of the simple pendulum is affected because it is given by

\dfrac{1}{2\pi}\sqrt{\dfrac{g}{l}}

where g and l are acceleration due to gravity and length of the pendulum, respectively. It is thus seen that it depends on g, which changes with location. In fact, the new frequency is given by

f_2 = 8.80\sqrt{\dfrac{1.67}{9.81}}=3.63 \text{ Hz}

3 0
3 years ago
What is the level of incidence
-Dominant- [34]

Answer:

The incidence rate is typically expressed as the number of cases per person-year of observation. Only new cases are considered when computing the incidence rate, while cases that were diagnosed earlier are excluded. The “population at risk” measure is usually obtained from census data.

Explanation:

The incidence rate is typically expressed as the number of cases per person-year of observation. Only new cases are considered when computing the incidence rate, while cases that were diagnosed earlier are excluded. The “population at risk” measure is usually obtained from census data.

5 0
3 years ago
How fr do you think you would go on a car while sneezing for 2.5 seconds ?
arsen [322]

depends on the speed limit

4 0
3 years ago
Read 2 more answers
Phÿśïčš<br><br>write the relation between celsius and fahrenheit scale?​
Aleksandr-060686 [28]

Answer:

C/100 = (F-32) / 180

or, C/5 = (F-32)/9

Explanation:

relation between any two scales is given by:

(X- lower fixed point ) / (upper fixed point -lower fixed point)

where X is any temperature

5 0
3 years ago
The nucleus of an atom is composed of unchanged particles as well as of the following
Ivan
I suppose that you wanted write "uncharged". The particles without electrical charge present in the nucleus are called neutrons.
7 0
3 years ago
Other questions:
  • What is the energy of a rock that weighs 125 n that is sitting on top of a hill 301 m high?
    10·1 answer
  • The planet Pluto has 1/500 the mass and 1/15 the radius of Earth. What is the value of g on the surface of Pluto?
    7·1 answer
  • The unified atomic mass unit is defined to be 1 u = 1.6605 ✕ 10−27 kg. Verify that this amount of mass converted to energy yield
    7·2 answers
  • A car traveling at 7.0 m/s accelerates uniformly at 2.5 m/s2 to reach a speed of 12.0 m/s. how long does it take this accelerati
    14·1 answer
  • A string is attached to a ball that has a mass of 0.11 kg. A student pulls up on the string so that the ball accelerates upward
    10·1 answer
  • what is the final speed of an object that starts from rest and accelerates uniformly at 4.0 meters per second over a distance of
    14·1 answer
  • The wavelength of a sound wave in this room is 1.13 m and the frequency is 301 Hz.
    7·1 answer
  • A proton (mass m 1.67 x 1027 kg) is being accelerated along a straight line at 1.4 x 1015 m/s2 in a machine. The proton has an i
    5·1 answer
  • Which is used to name an ionic compound?
    12·1 answer
  • 4. Three methods that people use are:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!