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
Tema [17]
3 years ago
5

Which element has 21 neutrons and 20 electrons?

Chemistry
2 answers:
mario62 [17]3 years ago
6 0
Scandium has 21 neutrons
LuckyWell [14K]3 years ago
4 0

Answer:

Calcium is your answer

Have a good day ahead

You might be interested in
A scientist is creating a new synthetic material. The material’s density is 6.1 g/cm3. Which sentences describe how the scientis
Anuta_ua [19.1K]
A and D
Density is mass over volume, if mass decreases or volume increases density decreases
4 0
3 years ago
Read 2 more answers
If the density of chloroform is 1.5 g/cm³, what is the mass of 50.0 cm³ of chloroform?
Marianna [84]
Density = mass / volume

1.5 = m / 50.0

m = 1.5 x 50.0

m = 75 g

hope this helps!
6 0
4 years ago
Read 2 more answers
At a fixed pressure, if the temperature is doubled, the volume of a gas will be
Scrat [10]

Answer:

Doubled.

Explanation:

The relationship between the temperature and the volume of a gas at a constant pressure can be described using Charles' law:

  • V₁*T₂ = V₂*T₁

That means that the temperature and the volume of a gas are directly proportional: The higher the temperature, the higher the pressure. If one of those factors is increased twofold, the other one will be increased twofold as well.

7 0
4 years ago
Large sandbars along the coastline that form from deposition of
olga55 [171]

Barrier island refers to the large sandbars along the coastline that form

from deposition of sand over long period of time.

<h3>Features of a Sandy environment </h3>

The features of a sandy environment include the following:

  • Spits
  • Barrier islands
  • Tombolos

Barrier Island are formed when sand is deposited over a long time and this

helps to prevent erosion along the coastline area.

Read more about Barrier Island here brainly.com/question/15750467

3 0
3 years ago
3. compared to the melting points of ionic compounds, the melting points of molecular solids tend to be ___.
Reil [10]
C) Lower, 

They're lower because molecular solids form IMF's such as Dipole-Dipole and H-Bonds, while Ionic bonds are much more powerful.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Nitrogen is ____ at room temperature. Please fill in the blank and then answer the question. Thank u :)
    9·1 answer
  • If the system is at dynamic equilibrium, which statement is true?
    13·2 answers
  • 5.00 ml of commercial bleach was diluted to 100.0 ml. 25.0 ml of the diluted sample was titrated with 4.56 ml of 0.100 m s2o3 2-
    15·1 answer
  • In an atomic model that includes a nucleus, negative charge is
    7·2 answers
  • Every organism is an ecosystem receives energy from another source.Which of these organism receives its energy directly from the
    13·2 answers
  • Alai is comparing the physical property of two materials. He is hitting each with a hammer to observe what happens. What physica
    15·2 answers
  • What are body tissues? (A)cells that perform different tasks(B)the main organ in the body.(C)organs in the body(D)similar cells
    11·2 answers
  • Is this statement true or false?<br><br> Ammonia is a base.<br><br><br> true<br><br> false
    5·1 answer
  • What kind of metal are spoons typically made out of?.
    6·2 answers
  • a 1.642 g sample of calcium bromide is dissolved in enough water to give 469.1 mL of solution what is the bromide ion concentrat
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!