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
shusha [124]
3 years ago
9

Elements in Group 18 are known

Chemistry
1 answer:
o-na [289]3 years ago
6 0

Answer:

C the number and placement of the electrons

Explanation:

Elements react with one another because they want to achieve a full valence shell of electrons. The noble gases already have a full valence shell of electrons, so they are unlikely to react with other elements.

You might be interested in
Think about the animals in an arctic ecosystem. How would those animals adapt over time if global temperatures rise over the nex
brilliants [131]

Given the fact that we are seeing a rise in the temperature of the globe, the artic animals in that ecosystem must adapt by a reduction in the rate of metabolism.

<h3>What is global warming?</h3>

Several evidences continue to emerge that the temperature of the earth have continued to increase and this is largely due to the fact that since the turn of the twentieth century and the rise of industrialization, there have been a rise in the emission of the carbon dioxide and other green house gases into the environment. As a result of this, the temperature of the earth has continued to rise steadily leading to the melting of the ice cover and the destruction of ecosystems that are found around the artic regions of the earth.

Now, we know that an organism is able to adapt to the changes that occur in its habitat by being able to alter some of its structure and function.

Given that the organisms that live in the artic are adapted to cold regions and low temperatures, the metabolic rate of the organisms is high in order to produce heat.

As a result of the rise in global temperatures, the organisms would have to reduce their rate of metabolism.

Learn more about global warming:brainly.com/question/12908180

#SPJ1

5 0
1 year ago
A sample of Ca(OH)2 is considered to be an Arrhenius base because it dissolves in water to yield
postnew [5]
The answer is C. Arrhenius bases increase the concentration of OH- in solution.
8 0
3 years ago
Read 2 more answers
Select three of the hard skills that a social worker needs.
vladimir1956 [14]

Answer:

active listening

compassion

understanding resources

Explanation:

from my own opinion

8 0
3 years ago
!!NEED URGENT SCIENCE HELP!! Please help me with this I am so lost. I will mark you brainliest and like ur answer and rate it 5
Citrus2011 [14]

Answer:

1. D   2. C   3. B

Explanation:

1. The product is always what is being yielded from the equation, or what is created. Since both 4H2O and 3CO2 are created from the reactants, they are both products of the reaction.

2. The Law of Conservation of Matter states that matter cannot be created, nor destroyed. Therefore, C is not true because new atoms cannot be created in a reaction.

3. The second formula is balanced, but the first is not

5 0
2 years ago
The different phases of the Moon refer to A. Changes in the Moon's shape. B. Changes in the Moon's visibility. C. Changes in sea
Sav [38]

Answer:

B. Changes in the Moon's visibility.

Explanation:

The moon's shifting of position makes it "appear" as being smaller or bigger. This is simply because the moon is rotating and the sun's light shines on a certain area of the moon, and depending on where we are on the Earth is how the moon looks or appears to our perspective.

5 0
3 years ago
Other questions:
  • Which type of reaction is caused by particle accelerators?
    9·2 answers
  • Limestone is composed almost entirely of calcite which has the chemical formula caco 3. As a result, limestone is classified as
    12·1 answer
  • A _ _ has a definite composition that will not vary
    11·1 answer
  • Look at the Lewis structures of the following molecules and predict their 3-D shapes according to the VSEPR theory. Oxygen dichl
    5·1 answer
  • How many liters of volume is one mole of gas at standard temperature and<br> pressure?
    12·1 answer
  • Question 107 points)
    5·1 answer
  • The formula distance time is used for calculating
    7·1 answer
  • What is the molarity of 5.63 moles of lithium in 3.25 liters of solution
    5·1 answer
  • Ionic bonds form between which two types of elements?​
    10·2 answers
  • in an aerosol spray can with a volume of 456 ml contains is 3.18g of propane gas as a propellant If the can is at 23° C and 50 A
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!