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Ivanshal [37]
3 years ago
8

Choose the atom with:

Chemistry
1 answer:
nata0808 [166]3 years ago
6 0

Answer:

a )Li

b)O

c)F

Explanation:

a) Li-1s^2 2s^1

F-1s^2 2s^2 2p^5

it is easy to pull out e- from 2p orbit than 2s because 2s orbit is close to nucleus.Therefore Li have high ionisation enthalpy

b)oxygen ion is larger than Na because o have fewer proton

c)F because it requires only 1e to achieve stable noble gas configuration.Therefore to achieve stable nobke gas electonic configuration it accept 1e.

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Among the different types of scientific knowledge ______ are likely to be modified or discarded most frequently. Long ago, in th
Tresset [83]

During a scientific study a hypotheses is generally modified or discarded

so for first blank the answer is hypotheses

Now in case of phlogiston theory it was assumed that when a substance catches fire it evolve certain substances known as phlogiston which was later on discarded as there is no such particle. Infact a substane undergoing oxidation may gain weight

Hence in second blank the answer is new evidence didn’t support it,

4 0
3 years ago
How does the Electoral College help to ensure that citizens in all states have a voice in the election of the
vredina [299]

Answer:

See below

Explanation:

The electoral college ensures that the most populated states can't always pick the next president.  States that have the most population would be able to skew the elections by cancelling out several other less populated state's voters.  One large city could cancel out every vote from the state of Rhode Island.

With the electoral college, each state has a given number of votes to cast for a president.  Some states can split their college votes while others cast all votes for the same candidate.

If you look at Pennsylvania in 2020 as an example, they have 20 electoral votes.  Pennsylvania does not split their votes so all go to just one candidate.  In the measurement of votes, it might show that candidate A got 51% of the votes and candidate B got 49%.  The 20 electoral votes would all go to candidate A and candidate B gets nothing.  Candidate B may have gotten millions of individual votes within the state but that no longer matters.  Candidate A won the state so gets all 20 electoral votes.  If the country went by the individual vote, Candidate B would keep all those votes he got from the 2 or 3 large cities in Pennsylvania.

It would be easy to see that if you only counted the individual votes (called the popular vote), a candidate could compile more votes from all of the states even though the candidate did not win that state by the majority vote.  The electoral college makes sure that a candidate cannot carry those votes from the state that they lost.

If elections were based on this popular vote, then most of the states with small populations would barely affect the outcome of an election.  The popularity vote would ensure that the states with the largest populated cities would always control who gets elected.

It would especially be detrimental in todays age since most large cities are almost always voting for just one party.

5 0
3 years ago
Density is defined as
Svetlanka [38]

Answer:

Density is normally used in Chemistry and it means 'A measure of mass per volume' or simply defined as the measurement that compares the amount of matter an object has to its volume!

Hope this helped :3

3 0
3 years ago
Is weathering a physical or chemical change, and why?
kumpel [21]
Weathering would be chemical because it's more natural than physical
7 0
3 years ago
I'd really appreciate help- this is due in around 8 hours :"D
Fed [463]

Answer:

  1. atomic #= 1
  • protons equals one
  • Number of neutrons equals to 0
  • number of electrons equal to 1
  • mass number equals to 1

2.

  • atomic number equals to 1
  • Protons equals to 1
  • number of neutrons equals to 0
  • number of electrons equals to 0 because the plus sign means that it loses an electron
  • mass number equals to 1

3.

  • atomic number 17
  • number of protons 17
  • number of neutrons 18
  • number for electrons 18 Because negative sign means It's an anion which means it gains an electron
  • mass number 35

4.

  • 12
  • 12
  • 12
  • 10 loses 2 its a cation
  • 24

5.

  • 47
  • 47
  • 108-47 = 61
  • 46 loses 1
  • 108

6.

  • 16
  • 16
  • 32-16 =16
  • 18 it gains 2 electrons
  • 32

there u go

7 0
3 years ago
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