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
Dominik [7]
4 years ago
13

What is a chemical element?

Biology
2 answers:
anygoal [31]4 years ago
7 0

an element on the periodic table

Serga [27]4 years ago
3 0

A chemical element is a species of atoms having the same number of protons in their atomic nuclei.

You might be interested in
Which is not a use for fossils found in sedimentary rocks?
Talja [164]
Answer is D Whereas theDepartment of Defense is charged with military actions abroad, theDepartment of Homeland Security works in the civilian sphere to protect the United States within, at, and outside its borders. Its stated goal is to prepare for, prevent, and respond to domestic emergencies, particularly terrorism.
5 0
3 years ago
Read 2 more answers
An ideal gas is held in a container of volume V at pressure p. The rms speed of a gas molecule under these conditions is v. If n
yawa3891 [41]

Answer:

d) 2v

Explanation:

Since, root mean square speed of a molecule,

V_{rms}=\sqrt{\frac{3kT}{m}}

Where,

k = Boltzmann constant,

T = temperature of gas,

m = mass of molecule,

Also, the temperature of a gas,

T=\frac{pV}{nR}

Where,

p = pressure of the gas,

V = volume,

n = number of moles of gas,

R = universal gas constant,

\implies V_{rms}=\sqrt{\frac{3kpV}{mnR}}

If V = 2V and p = 2P

Then,

V_{rms}=\sqrt{\frac{12kpV}{mnR}

=2\sqrt{\frac{3kpV}{mnR}

Hence, if rms speed of a gas molecule under initial conditions is v then rms speed of a molecule will be 2v

i.e. option d is correct.

5 0
3 years ago
A fever is a sign that....
notka56 [123]

Answer:

its a sign of your body's natural fight against an affection

Explanation:

hope this helps:)

4 0
2 years ago
Read 2 more answers
An inherited disease that affects the pancreas, respiratory system, and sweat glands is
ad-work [718]
Answer:  "cystic fibrosis" .
___________________________________________
8 0
3 years ago
Examine this US population map from 2000. which population distribution pattern do US residents most closely resemble? why do yo
Alina [70]

PLATO

The US population most closely represents a clumped pattern, as humans are social animals who interact regularly. The United States has higher populations near major cities, which generally have more resources than rural areas.

6 0
4 years ago
Other questions:
  • Many products and services were initially developed for space exploration
    9·2 answers
  • Which of the following statements is true? Fusion splits atoms. Uranium 235 is produced from fission. The heat from stars is cre
    15·2 answers
  • What does the theory of evolution tell us about living things?
    11·1 answer
  • Why would be a consequence if plants could not go through Phototropism?
    15·2 answers
  • On which axis would u graph the dependent variable?
    5·2 answers
  • The y-axis to the right represents ___________. the level of excess resources available for population growth the level of resou
    14·2 answers
  • Which correctly states the order of the stages of aerobic respiration?
    14·1 answer
  • Ions are in low concentration outside a cell. They move rapidly into the cell via protein molecules. What term describes this ac
    5·1 answer
  • What can cause rapid revolution?
    12·1 answer
  • Question 2 of 10
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!