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
Ksenya-84 [330]
3 years ago
8

The periodic table is based on an element's

Chemistry
1 answer:
nasty-shy [4]3 years ago
7 0

Answer:

Atomic number

Explanation:

You might be interested in
The area surrounding the Pacific Ocean is often referred to as the ring of Firee due to the concentration of geologic events. De
viva [34]

Answer:

The amount of movement of tectonic plates in the area

Explanation:

The population density vary across the countries

Japan(127m), Philippines ( 103m), Indonesia (267m).

The volcanoes in Indonesia are among the most active of the pacific Ring of Fire along the north east island

5 0
3 years ago
Question 20 (3 points) Why is the moon visible? Question 20 options: It is on fire. It reflects sunlight. Earth lights it up. It
alexgriva [62]

20. Answer is "it reflects sunlight".<span>

<span>The moon is </span>not a star<span> <span>as sun. Hence, </span></span>moon can't produce light by itself<span>. The only reason that we can see the moon is </span>it reflects the sunlight<span>. According to the distance from the sun to the moon, the light reflection can be varied.</span>

21. Answer is "Jupiter".

Asteroid belt<span> <span>is a </span></span>region which is located between Mars and Jupiter and consists of asteroids and minor planets.<span> This asteroid belt has the </span>4%<span> <span>as the mass </span>of our moon. Due to the </span>Jupiter's strong gravity<span>, it is </span>prevented a forming of new planet by this asteroid belt.

22.<span> Answer is "</span>they are equal".

The period of revolution is the time which is taken by a mass to go completely one round around another mass. For moon, the period of revolution is 27 days.<span>
The period of rotation</span> is the time taken by a mass to complete one round around its own axis. It is about 27 days for moon. 

</span>23.<span> Answer is "</span>The moon is in Earth's shadow".

<span>Lunar eclipse happens when </span>Sun, Earth and moon are directly aligned each other <span>and Earth is located in between the Sun and the moon. </span>Then the moon is covered by the Earth's shadow.

24.<span> Answer is "</span>In a solar eclipse, it is Earth that is caught in the umbra of the moon. In a lunar eclipse, it is the moon that is caught in the umbra of Earth".

In total lunar eclipse, Earth is located between Sun and the moon and they are directly aligned to each other. The moon is totally covered with the Earth's shadow.
Total solar eclipse can be seen when the moon is located between sun and Earth by completely covering the sun. 

25. According to the given choices, we can get "Apollo"<span> as the answer.

Apollo 8 is the first manned mission to the moon. From that there were several manned mission including <span>first manned landing on the moon. The Apollo program was conducted by USA.</span> </span>

5 0
3 years ago
This is the elliptical orbit of the Earth around the sun. It takes 365.26 days to complete one orbit.
nydimaria [60]
Yes what is the question
5 0
3 years ago
Read 2 more answers
An atom has atomic number 11 and mass number 23. How many electrons does the atom have?
Gre4nikov [31]

Answer:

11

Explanation:

the atomic number is the same as the number of electrons

8 0
3 years ago
Which of the following is the Arrhenius definition of an acid?
castortr0y [4]
Arrhenius is a substance that dissociates in water to produce hydrogen ions (H+) and there is a clear answer which coincides with this definition. The correct answer is definitely b. a substance that increases the concentration of hydronium ions when dissolved in water.
5 0
3 years ago
Other questions:
  • 1. When an acid reacts with a base, what compounds are formed? (1 point) a salt only water only metal oxides only a salt and wat
    5·2 answers
  • 2. This graph shows the energy involved in a reaction involving two molecules. Describe what is happening or what the state of t
    11·1 answer
  • PAP Physical Studies<br><br> How can you remember the periodic table?
    7·2 answers
  • PLEASE ANSWER QUICK. Place in order from simplest (top) to most complex (bottom).
    7·1 answer
  • How should the enthalpy of an intermediate step be manipulated when used to produce an overall chemical equation?
    5·1 answer
  • What properties you can determine for carbon and calcium based on their respective locations on the periodic table​
    13·1 answer
  • Va rog urgent e pt chimie​
    6·1 answer
  • 150 mL of 0.25 mol/L magnesium chloride solution and 150 mL of 0.35 mol/L silver nitrate solution are mixed together. After reac
    15·1 answer
  • Conservation of mass to balance the following reaction. Na2S+ KI= NaI+ K2S
    9·1 answer
  • the ___is the area that allows us to pinpoint the location of pain, identify a texture and be aware of how our limbs are positio
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!