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
Brrunno [24]
2 years ago
7

How many protons electrons and neutrons are present in the following atoms​

Chemistry
2 answers:
grin007 [14]2 years ago
4 0

Answer:the element is potassium

the proton and electron is 19 and the nuetron is 19

Explanation:

Flura [38]2 years ago
3 0

Answer:

The atomic number gives the number of protons 19

p = 19

The atomic mass is the sum of the protons and neutrons

p+n = 39 p = 19

Put p into the equation and solve for n the neutrons

19+n = 39

Subtract 19 from both sides

19-19+n = 39-19

n = 20

The number of electons equal the number of protons in a neutral atom. The positive charge equal to the negative charge. The negative charge is the number of electons. This ion has a charge of +1. So solve for the negative charge.

-19+1 = -18

The negative charge is -18 so

e = 18

You might be interested in
✞What Is an Alloy?⭐⭐​
max2010maxim [7]
A alloy is a red chicken
8 0
2 years ago
Why is most of the Earth’s fresh water unavailable?
lisov135 [29]

Answer:

2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost.

Explanation:

3 0
3 years ago
What is the molarity of 2.00 L of a solution that contains 14.6 g NaCl?
White raven [17]

Answer: The molarity of the solution is 0.125 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

moles of NaCl = \frac{\text {given mass}}{\text {Molar mass}}=\frac{14.6g}{58.5g/mol}=0.250mol

Now put all the given values in the formula of molality, we get

Molarity=\frac{0.250mol}{2.00L}=0.125M

Therefore, the molarity of the solution is 0.125 M

8 0
3 years ago
Help this is an earthquake thing
mr Goodwill [35]

Answer:

im pretty sure its a push or pull thing

Explanation:

Tensional stress is the stress that tends to pull something apart. It is the stress component perpendicular to a given surface, such as a fault plane, that results from forces applied perpendicular to the surface or from remote forces transmitted through the surrounding rock.

5 0
2 years ago
Which property of potential energy distinguishes it from kinetic energy
satela [25.4K]
The property of potential energy that distinguishes it from kinetic energy are Shape and position 
8 0
3 years ago
Other questions:
  • Which statement best describes how a salmon's tail fin helps it to survive?
    13·1 answer
  • What is the difference between a group and a period
    5·2 answers
  • How do the number of daylight hours affect temperature
    8·2 answers
  • A galvanic cell at a temperature of 42°C is powered by the following redox reaction:
    15·2 answers
  • Pls help me with this atomic number worksheet I will make you the brainiest worth 25 points
    7·1 answer
  • What is the pOH of a substance with a Hydrogen concentration of 3.45 x 10-9. suppose to be a small 9
    8·2 answers
  • Explain the following observation. Treatment of alkyl chloride A with NaOCH2CH3 yields only one product B, whereas treatment of
    6·1 answer
  • Below you will see both the elements for comparison and a star's spectrum. Your job is to identify all the elements you can dete
    6·1 answer
  • Explain in your own words what the law of conservation of mass means
    14·1 answer
  • Moles to mass<br> HELP PLEASE <br> 15 pts
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!