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Alona [7]
3 years ago
8

A more reactive metal displaces a less reactive metal from salt solution. Such reactions are called:

Chemistry
2 answers:
faust18 [17]3 years ago
8 0

Answer:

displacement reaction

motikmotik3 years ago
6 0

Answer:

Displacement Reaction.

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What is the barycenter of the moon and the earth​
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Answer:

The barycenter is the point in space around which two objects orbit. For the Moon and Earth, that point is about 1000 miles (1700 km) beneath your feet, or about three-quarters of the way from the Earth's center to its surface.

Explanation:

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Question 11 of 25
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a.The waves are absorbed or reflected to capture images

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How Things Work: TSA scanners use electromagnetic waves for detection. ... These waves are bounced off the body of the person being scanned to create a three-dimensional image on the computer. The backscatter units instead bounce low-level electromagnetic X-rays off the body to create an image on the computer

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Which principal energy level can hold a maximum of 18 electrons?
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3rd level would able to hold a max of 18 elelctrons


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3 years ago
In the correct lewis structure for the nitrate ion, no3 –­, nitrogen has how many covalent bonds?
Colt1911 [192]

Answer :  The correct Lewis-dot structure of nitrate ion is shown below and the nitrogen has 4 covalent bonds.

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.  The number of valance electrons are shown by 'dot'.

The given molecule is, nitrate ion

As we know that nitrogen has '5' valence electrons and oxygen has '6' valence electron.

Therefore, the total number of valence electrons in NO_3^- = 5 + 3(6) + 1 = 24 electrons

According to Lewis-dot structure, there are 8 number of bonding electrons and 16 number of non-bonding electrons.

The correct Lewis-dot structure of nitrate ion is shown below.

8 0
3 years ago
The characteristics of two methods of heat transfer are listed below: Method A: No material medium is required and heat is trans
Mumz [18]

<em>Answer:</em>

  • Method A is radiation and Method B is convection.

<em>Explanation:</em>

Radiation:

  • The radiations are basically electromagnetic radiation that does not required any medium to travel. They can travel not through  air and solid material but can travel through  vacuum.

Convection:

  • The convection is method of transfer of heat through liquid or gaseous medium.

<em>Summary:</em>

  • As in method one, there is no medium, so radiation can pass without medium
  • As in method two, there is liquid or gases medium, so heat travel through this medium will be convection.
7 0
3 years ago
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