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Natalka [10]
3 years ago
5

Using the VSEPR theory , what would the representation mean A central atom with 2 connected atoms atom with I lone pair of Jone

pair of electrons electrons with 2 connected atoms to the central atom central atom with 2 pairs of lone pair none of these electrons and commected atom to the central
Chemistry
1 answer:
VLD [36.1K]3 years ago
3 0

Answer:

The molecule has a bent geometry

Explanation:

Let us look again at the principles of VSEPR theory. The shape of a molecule depends on the number of electron pairs that surround the valence shell of the central atom in the molecule.

Lone pairs distort the molecular geometry away from what is expected on the basis of VSEPR theory.

The molecule described in the question has the form AEX2. Two substituents and one lone pair form three electron domains around the central atom. The expected geometry is trigonal planar but the observed molecular geometry is bent because of the lone pairs present.

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A sample of gas occupies a volume of 72.0 mL . As it expands, it does 141.2 J of work on its surroundings at a constant pressure
bagirrra123 [75]

The final volume of the gas is  73.359 mL

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Given :

A sample gas has an initial volume of 72.0 mL

The work done = 141.2 J

Pressure = 783 torr

The objective is to determine the final volume of the gas.

Since, the process does 141.2 J of work on its surroundings at a constant pressure of 783 Torr. Then, the pressure is external.

Converting the external pressure to atm; we have

External Pressure Pext:

P ext = 783 torr × \frac{1 atm}{760 torr}

Pext = 1.03 atm

The work done W =  Pext V

The change in volume ΔV= \frac{W}{Pext}

ΔV = \frac{141.2 J \frac{1 L atm}{101.325 J} }{1.03 atm}

ΔV = \frac{0.0014}{1.03}

ΔV = 0.001359 L

ΔV = 1.359 mL

The initial  volume = 72.0 mL

The change in volume V is ΔV = V₂ - V₁

-  V₂ = - ΔV - V₁

multiply both sides by (-), we have:

V₂ = ΔV + V₁

     =  1.359 mL + 72.0 mL

     = 73.359 mL

Therefore, the final volume of the gas is  73.359 mL .

Learn more about volume here:

brainly.com/question/27100414

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3 0
1 year ago
I NEED THIS ANSWER QUICK
AVprozaik [17]
The answer is a!..................
4 0
2 years ago
A weight of 0.27 kilogram is<br> 1. 0.00027 mg<br> 2. 270 mg<br> 3. 27 mg<br> 4. 2.7 × 105 mg
julia-pushkina [17]
The answer is:  4)  " 2.7 * 10⁵  mg "   .
________________________________________________________
Explanation:
________________________________________________________
Since all answer choices given are in "mg" ("milligrams");  we need to convert our given value, "0.27 kg" ("kilograms") to "mg" ("milligrams").
________________________________________________________
Note the following "exact value" conversions:
________________________________________________________
 1000 mg = 1 g ;
   1000 g = 1 kg. 

(0.27 kg) (1000 g / 1 kg) (1000 mg/1 g) = __?__ mg ;
_____________________________________________________
 The units of "kg", and "g" cancel to "1" and we are left with:
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0.27 * 1000 * 1000  mg  = 270,000 mg =  2.7 * 10<span>⁵ </span> mg ; which is:
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                                                               → Answer choice: # 4  .
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3 years ago
Kilograms represented by the mass defect for oxygen-16: 2.20 × 10 -28 kg What is the nuclear binding energy for oxygen-16?
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1.98 × 10^<span>-11</span><span> J i just took it this is the right awnser</span>
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3 years ago
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Answer:

Polar molecules typically do not conduct electricity as well as ionic molecules. This is because charges in polar molecules due to unequal sharing of electrons are not as strong as the charges on ions

6 0
2 years ago
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