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Anastaziya [24]
3 years ago
12

Write the chemical formula of sodium thiosulphate​

Chemistry
1 answer:
Vikentia [17]3 years ago
6 0

Answer:

Na2S2O3

Explanation:

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A: It prevents most reactions from occurring spontaneously.

The answer above is correct.
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175.24g of strontium equals how many moles
OverLord2011 [107]
Using dimensional analysis, we can find the moles of strontium by comparing the mass of strontium to it's atomic mass.
You can find the atomic mass of Sr on the periodic table:
Atomic Mass Sr = 87.62g/mol

In case you are not familiar, dimensional analysis works like this:
(what we know) x (conversion factor) = what we are looking for

The conversion factor compares the units of what we know to the units of what we are looking for. In this case, the conversion factor is:
1 mol/87.62g

The important thing to note about the conversion factor is that you want to be able to cancel out the units of your given measurement (in this case, it is the mass)

So, our full solution will be:
moles Sr = (175.24 g)x(1 mol/87.62 g)
(cancel out the mass units)
moles Sr = 175.24 x 1 mol/87.62
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4 0
3 years ago
How do metals form chemical bonds with other metals?
gogolik [260]

Answer:

Metallic bonding  

Explanation:

Metals have low ionization energies. Therefore, their valence electrons are easily delocalized (attracted to the neighbouring metal atoms). These delocalized electrons are then not associated with a specific metal atom.  Since the electrons are “free”, the metal atoms have become cations, and the electrons are free to move throughout the whole crystalline structure.

We say that a metal consists of an array of cations immersed in a sea of electrons .

The electrons act as a “glue” holding the cations together.

Metallic bonds are the attractive forces between the metal cations and the sea of electrons.

In an NaK alloy, for example, the Na and K atoms contribute their valence electrons to the "sea".  The atoms aren’t bonded to each other, but they are held in place by the metallic bonding.

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I need help please. No links or I will report your whole profile
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Answer:

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Explanation:

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