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bija089 [108]
3 years ago
11

What is likely to be found in placer deposit

Chemistry
1 answer:
Dmitriy789 [7]3 years ago
8 0
In geology, a placer deposit<span> or </span>placer<span> is an accumulation of valuable minerals formed by gravity separation during sedimentary processes. ... Valuable mineral components often occurring with black sands are monazite, rutile, zircon, chromite, wolframite, and cassiterite.</span>
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What is the relationship between absorbance and transmittance of a sample in a spectrophotometer?
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B) Ethane has the formula C2H6. In terms of electronic structure,
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Answer:

There is one single covalent bond between two carbon atoms.

Explanation:

We know that sharing of electrons form covalent bonds.

If we look upon K,L,M ,N shells of the carbon and hydrogen atoms.

We found that Hydrogen is having only  1 electron in K shell.

And Carbon on the other hand is having 2 electrons in K shell and 4 electrons in L shell.

So carbon have  4 valence electrons,and it can share 4 bonds with any relevant atom to complete its octet.

And Hydrogen requires  1 electron to complete its doublet.

Alkane general formula C_{n}H_{2n+2}

For ethane n=2

C_{2}H_{4+2} = C_{2}H_{6}

1 Carbon atom is shared by  3 Hydrogen.

The remaining one electron (4-3)=1 of carbon will be shared with another carbon atom.

An image of the sharing of electrons attached below,

Hence we have only  1 covalent bond between the two.

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4 years ago
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What is the volume (in liters) of a 5.52 gram sample of O2 at STP?
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Recall that at STP, 1 mole of any ideal gas occupies 22.4 liters. Volume O2 gas = 0.0510 moles O2 x 22.4 L/mole = 1.14 liters (3 sig.

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