All categories

3 years ago

Nitrogen has an atomic mass of about 14 amu and an atomic number of 7. How many neutrons does nitrogen have?

Chemistry

2 answers:

Pavlova-9 [17]3 years ago

7 0

So 14-7=7. There are 7 neutrons.

Tems11 [23]3 years ago

4 0

So the atomic number of an element tells the number of proton in the element.
The atomic mass is the sum of the number of protons and neutrons.

From this we can draw up and equation:
Atomic Mass = (# of protons) + (# of neutrons)

⇒ # of neutrons = Atomic Mass - Atomic Number
= 14 - 7
= 7

Therefore nitrogen has SEVEN neutrons.

You might be interested in

I need it please !!!

anyanavicka [17]

Answer:

im pretty sure its 2...

Explanation:

if its wrong im sorry

if its right brainliest pls?

6 0

3 years ago

How can you differentiate the Atomic Structure and the Bohr Model? In other words, how is the Atomic Structure different from th

Tatiana [17]

Answer:

Bohr thought that electrons orbited the nucleus in circular paths; whereas in the modern view atomic electron structure is more like 3D standing waves. Bohr built upon Rutherford's model of the atom. ... He believed that electrons moved around the nucleus in circular orbits with quantised potential and kinetic energies.

Explanation:

8 0

3 years ago

calculate pressure exerted by 1.255 mol of CI2 in a volume of 5.005 L at a temperature 273.5 k using ideal gas equation

balu736 [363]

Answer:

The pressure is 5.62 atm.

Explanation:

An ideal gas is a theoretical gas that is considered to be composed of randomly moving point particles that do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P * V = n * R * T

In this case:

P= ?
V= 5.005 L
n= 1.255 mol
R= 0.082 $\frac{atm*L}{mol*K}$
T= 273.5 K

Replacing:

P* 5.005 L= 1.255 mol* 0.082 $\frac{atm*L}{mol*K}$ *273.5 K

Solving:

$P=\frac{1.255 mol* 0.082 \frac{atm*L}{mol*K} *273.5 K}{5.005 L}$

P= 5.62 atm

<u><em>The pressure is 5.62 atm.</em></u>

8 0

3 years ago

I really need an answer by tonight!

Anton [14]

The water cycle iss a process which helps to circulate and replenish water on earth.

<h3>What is hydrology?</h3>

Hydrology is the scientific study of water bodies , the changes that occur in them as well as the various features and behavior of water bodies such as oceans and rivers.

Water circulation created by prevailing wind systems. The Gulf Stream is an example up of the Coriolis effect.

The length of open sea over which wind can blow steadily to create waves is called fetch.

Salinity is the amount of dissolved salt in a liquid

The distance from the crest of one wave to the crest of another is called wavelength

Water circulation created by differences in density deepwater currents

Energy is what moves forward and through a wave.

The cyclical process of the changing state and movement of water around the Earth through evaporation, condensation, and precipitation is called water cycle.

As the amount of salt in water increases, the density of the water increases.

The type of energy possessed by moving water is called kinetic energy.

The rising of ocean water bringing nutrients up from the deep us called upwelling.

Therefore, the water cycle helps to circulate and replenish water on earth.

Learn more about water cycle at: brainly.com/question/2164391

5 0

2 years ago

In 1995, 78 women were enrolled in chemistry at a certain high school while 162 men were enrolled. What was the percentage of wo

dem82 [27]

Answer:

32.5% female

67.5% male