All categories

4 years ago

If carbon has an atomic number of 6, how many protons and neutrons are found in the carbon-14 atom? A.

1 answer:

5 0

The correct answer is B. 6 protons and 8 neutrons

Carbon-14 has same atomic number of 6. It has a nucleon number of 14
Atomic number = proton number = 6
Neutron number = nucleon number - atomic number = 14 - 6 = 8

Hope it helped!

You might be interested in

A gamma-ray photon produces an electron and a positron, each with a kinetic energy of 261 keV . h=6.626×10−34J⋅s, c=2.998×108m/s

ddd [48]

Answer:

The energy and the wavelength of the photon are 1.546 MeV and $8.036\times10^{-13}\ m$ .

Explanation:

Given that,

Kinetic energy = 261 KeV

Planck's constant $h = 6.626\times10^{−34}\ J.s$

Speed of light $c=2.998\times10^{8}\ m/s$

Mass of electron $m_{e}=9.109\times10^{-31}\ kg$

Charge $q=1.602\times10^{-19}\ C$

(A). We need to calculate the energy of the photon

Using formula of rest mass energy

$E=m_{0}c^2$

$E=9.109\times10^{-31}\times(3\times10^{8})^2$

$E=8.198\times10^{-14}\ J$

Energy in eV

$E=\dfrac{8.198\times10^{-14}}{1.6\times10^{-19}}$

$E=512375\ eV$

$E=0.512\ MeV$

The total energy of photon

$TE=2(E+K.E)$

$TE=2(0.512+0.261)$

$TE=1.546\ MeV$

(B). We need to calculate the wavelength of the photon

Using formula of wavelength

$\lambda=\dfrac{hc}{E}$

Put the value into the formula

$\lambda=\dfrac{6.626\times10^{−34}\times3\times10^{8}}{1.546\times10^{6}\times1.6\times10^{-19}}$

$\lambda=8.036\times10^{-13}\ m$

Hence, The energy and the wavelength of the photon are 1.546 MeV and $8.036\times10^{-13}\ m$ .

7 0

3 years ago

What is the leading cause for change between states of matter?

valkas [14]

Change of energy (normally potential energy via temperature change)

5 0

3 years ago

The earth rotates once per day about its axis. where would you have to stand in order to have the smallest tangential speed?

Yuliya22 [10]

<span>The earth as a whole rotates with a fixed angular velocity. Therefore, you need to be at the rotation axis to have the smallest tangential speed. This would be at the north or south pole.</span>

5 0

3 years ago

Which of the following people would make the best scientist?

Alona [7]

Answer:

Alain Aspect, David Baltimore, Allen Bard, and Timothy Berners - Lee

6 0

4 years ago

Read 2 more answers

Help thank you...............

Sergeu [11.5K]

Answer: