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
arsen [322]
3 years ago
9

use the heisenberg uncertainty principle to calculate the uncertainity in meters in the position of 0.68g and traveling at a vel

ocity of 0.85 m/s. assume the uncertainity in meters in the position of a helium atom if the uncertaunty in the velocity is 0.1 m/s
Chemistry
1 answer:
My name is Ann [436]3 years ago
8 0

Answer:

7.7439×10⁻³¹ m

Explanation:

The expression for Heisenberg uncertainty principle is:

\Delta x\times \Delta v=\frac {h}{4\times \pi\times m}

Where m is the mass of the microscopic particle

h is the Planks constant

Δx is the uncertainty in the position

Δv is the uncertainty in the velocity

Given:

mass = 0.68 g = 0.68×10⁻³ kg

Δv = 0.1 m/s

Δx= ?

Applying the above formula as:

\Delta x\times 0.1=\frac {6.62\times 10^{-34}}{4\times \frac {22}{7}\times 0.68\times 10^{-3}}

<u>Δx = 7.7439×10⁻³¹ m</u>

You might be interested in
When 1.95 g of co(no3)2 is dissolved in 0.350 l of 0.220 m koh, what are [ co2+], [ co(oh)42−], and [ oh−] if kf of co(oh)42− =
Airida [17]
Mass of Co(NO₃)₂ = 1.95 g
V KOH = 0.350 L
[KOH] = 0.220 M
Kf = 5.0 x 10⁹
molar mass of Co(NO₃)₂ = 182.943 g/mol
so [Co(NO₃)₂] = 1.95 / (0.350 * 182.943) = 0.03045 M
[Co²⁺] = 0.03045 M
[OH⁻] = 0.22 M
chemical reaction:
             Co²⁺(aq) + 4 OH⁻    ⇄      Co(OH)₄²⁻
I (M)      0.03045      0.22                   0
C (M)   - 0.03045   - 4 (0.03045)      0.03045
E (M)       - x         0.22 - 4(0.03045)   0.03045
                              = 0.0982
Kf  = [Co(OH)₄²⁻] / [Co⁺²][OH⁻]⁴
5.0 x 10⁹ = (0.03045) / x (0.0982)⁴
x = 6.5489 x 10⁻⁸
at equilibrium:
[Co²⁺] = 6.54 x 10⁻⁸
[OH⁻] = 0.0982 M
[Co(OH)₄²⁻] = 0.03045 M



4 0
3 years ago
What’s the bladder wall made up of?
AleksandrR [38]

Answer:

The bladder wall is made of many layers, including: Urothelium or transitional epithelium. This is the layer of cells that lines the inside of the kidneys, ureters, bladder, and urethra. Cells in this layer are called urothelial cells or transitional cells

Explanation:

8 0
3 years ago
​I have a few questions from my homework and I was wondering if I can get some help ​
sashaice [31]
Well it breaks down into small parts
3 0
2 years ago
Positrons are spontaneously emitted from the nuclei of
Leto [7]
Positrons are spontaneously emitted from the nuclei of potassium -37.
4 0
3 years ago
Read 2 more answers
Which of these properties of an unknown liquid can be found using a beaker, a hot plate, and a temperature probe?
alexandr1967 [171]

I think it is H. Boiling Point

7 0
2 years ago
Read 2 more answers
Other questions:
  • An object with a mass of 3.5 g raises the level of water in a graduated cylinder from 25.1 mL to 31.7 mL. What is the density of
    15·1 answer
  • Which of the following factors used in a dimensional analysis calculation have a finite number of significant figures (in other
    5·1 answer
  • Model describe how you would show j.j. thomson's model of the atom using small beads and clay
    11·1 answer
  • PLEASE HELP FELLOW BRAINLIEST I NEED YOU AND QUICK!!!!!!!!!!!!!!!!!!!!!!!! Thomas Jefferson was the first to suggest what practi
    13·2 answers
  • What's the valency of lead in pbO2​
    11·1 answer
  • Its is the change in energyof a neutral atom when an electron to the atom to form negativeion, thus neutral atom gain electon.Wh
    5·1 answer
  • Amy found a volume of red liquid to be 55.1 ml, and have a mass of 8.199g. What is the density of her
    15·1 answer
  • Balance and find out the coefficients of reactions and products ​
    7·1 answer
  • Based on the reactivities of the elements involved, which reaction will form products that are more stable than the reactants?
    6·1 answer
  • Suppose that a 10-mL sample of a solution is to be tested for I− ion by addition of 1 drop (0.2 mL) of 0.13 M Pb(NO3)2.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!