1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svlad2 [7]
2 years ago
15

Consider two concentric spheres whose radii differ by t = 1 nm, the "thickness" of the interface. At what radius (in nm) of sphe

re does the volume of a shell equal that of the interior sphere? Assume the shell thickness to be t = 1 nm.
Chemistry
1 answer:
Gala2k [10]2 years ago
8 0

Answer:

Radius of the interior sphere = 3.847 nm

Explanation:

The volume of the shell (Vs) is equal to the difference of the volume of the outer sphere (Vo) and the volume of the inner sphere (Vi). Then:

V_s=V_o-V_i=V_i\\V_o=2*V_i\\

If we express the radius of the outer sphere (ro) in function of the radius of the inner sphere (ri), we have (e being the shell thickness):

r_o=r_i+e

The first equation becomes

\frac{4 \pi}{3}*r_o^{3}  = 2 * \frac{4 \pi}{3}*r_i^{3}  \\\\\frac{4 \pi}{3}*(r_i+e)^{3}  = 2 * \frac{4 \pi}{3}*r_i^{3}  \\\\(r_i+e)^{3}  = 2 *r_i^{3}  \\\\(r_i^{3}+3r_i^{2}e+3r_ie^{2}+e^{3})=2r_i^{3}\\\\-r_i^{3}+3r_i^{2}e+3r_ie^{2}+e^{3}=0\\\\-r_i^{3}+3r_i^{2}+3r_i+1=0

To find ri that satisfies this equation we have to find the roots of the polynomial.

Numerically, it could be calculated that ri=3.847 nm satisfies the equation.

So if the radius of the interior sphere is 3.847 nm, the volume of the interior sphere is equal to the volume of the shell of 1nm.

You might be interested in
If chemical bonds didn’t
hram777 [196]

All of the above answers are true right answer is option D

because, no bond no molecule no interaction no life,

no bond= only element will exist

Energy would not exist coz energy consumption and excretion takes place during bond formation and bond breaking process!

3 0
3 years ago
Read 2 more answers
What do we call compounds that will not dissolve in water
denis-greek [22]

Answer:

covalent compounds

Explanation:

8 0
3 years ago
Read 2 more answers
Chemical or physical properties? titanium is less dense than water
Leya [2.2K]
Physical......................................................
5 0
3 years ago
Would nitrogen gas be a mineral if it has a chemical formula of n2?
STALIN [3.7K]

<u>Answer:</u>

Nitrogen gas be a mineral only, if it is in organic forms.

<u>Explanation:</u>

Most of the forms of organic nitrogen is not be taken by plants, with the exception in the form of small organic molecules. Also plants can promptly take the nitrogen  when it is in other forms like ammonia and nitrate.

The microorganisms  in the soil converts the organic forms of nitrogen to mineral form when they decompose organic matters and  also fresh plant residues. This type of process is called mineralisation.

6 0
3 years ago
A balloon contains 2.0 L of air at 101.5 kPa . You squeeze the balloon to a volume of 0.25 L.
8_murik_8 [283]
<h3>Answer:</h3>

812 kPa

<h3>Explanation:</h3>
  • According to Boyle's law pressure and volume of a fixed mass are inversely proportional at constant absolute temperature.
  • Mathematically, P\alpha \frac{1}{V}

At varying pressure and volume;

P1V1=P2V2

In this case;

Initial volume, V1 = 2.0 L

Initial pressure, P1 = 101.5 kPa

Final volume, V1 = 0.25 L

We are required to determine the new pressure;

P2=\frac{P1V1}{V2}

Replacing the known variables with the values;

P2=\frac{(101.5)(2.0L)}{0.25L}

           = 812 kPa

Thus, the pressure of air inside the balloon after squeezing is 812 kPa

8 0
3 years ago
Other questions:
  • Which is the correct order of materials in terms of reflectivity, from least to greatest?brown soil, beige sand, white paper, bl
    7·2 answers
  • What important role do fungi play in the environment
    8·2 answers
  • PLEASE HELP 30 POINTS
    6·1 answer
  • What do you use to mesure wind
    8·1 answer
  • 4. Biotic factors that affect other organisms in an ecosystem include all but which of the following factors? a. Symbiosis b. Pr
    15·1 answer
  • Blank is most if the compounds that make up living things?
    9·1 answer
  • What is the concentration of a solution with a volume of .45 L that contains .9 moles of Iron (II) chloride?
    8·1 answer
  • A GIRL WAIKS 10M NORTH,15M EAST AND THEN FINALLY 20MSOUTH FIND HER DISPLACEMENT​
    14·1 answer
  • If there are 94 different kinds of naturally occurring atoms how many different naturally occurring elements are there?
    14·1 answer
  • Convert 7.6 × 105 cal to kiloJoules
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!