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
maria [59]
3 years ago
9

Calculate the wavelength of an electron (m = 9.11 x 10-28 g) moving at 3.66 x 100 m/s. A) 1.81 x 10-10 m B) 2.76 x 10-9 m C) 5.0

3 x 10-10 m D) 5.52 x 10-9 m E) 1.99 x 10-10 m
Chemistry
2 answers:
inna [77]3 years ago
7 0

Answer:

option e = 1.99 × 10⁻⁶ m

Explanation:

Given data:

Mass of electron = 9.11 × 10⁻²⁸ g   or 9.11 × 10⁻³¹ Kg

Velocity = 3.66 × 100 m/s

Wavelength = ?

Solution:

Formula:

λ  = h / m. v

λ  = wavelength

h = planck's constant

m = mass

v = velocity

Now we will put the values in equation

λ  = h / m. v

λ  =  6.63 × 10⁻³⁴ Kg. m²/s  / 3.66 × 100 m/s . 9.11 × 10⁻³¹ Kg

λ  =  6.63 × 10⁻³⁴ Kg. m²/s / 3334.26  × 10⁻³¹ Kg .m/s

λ  = 1.99 × 10⁻⁶ m

Andreyy893 years ago
6 0
<h3>Answer:</h3>

E) 1.99 x 10^-10 m

<h3>Explanation:</h3>

We are given;

The mass of an electron (m)as 9.11 x 10^-28 g

Speed of the electron (v) is 3.66 x 10^6 m/s.

We are required to find the wavelength of the electron.

This can be done using the  De Broglies wavelength Formula:

λ = h/mv; where λ is the electron wavelength, v is the speed of the electron, m is the mass of the electron and h is the plank's constant (6.626×10^-34)

Therefore;

Wavelength = (6.626×10^-34)÷(9.11 x 10^-28 g × 3.66 x 10^6 m/s)

                    = 1.987 ×10^-10 m

                    = 1.99 × 10^-10 m

Therefore, the wavelength of an electron is 1.99 × 10^-10 m

You might be interested in
Write these sentences in your own words: Kinetic energy is the energy of motion, observable as the movement of an object, partic
QveST [7]
To shorten it, i would say that Kinetic energy is determined by the speed and mass of an object
8 0
3 years ago
What is the nucleus of an atom split
larisa [96]
In nuclear physics and nuclear chemistry, nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits<span> into smaller parts (lighter </span>nuclei<span>). Hope this helps</span>
4 0
4 years ago
Read 2 more answers
The graph shows the distribution of energy in the particles of two gas samples at different temperatures, T, and T2. A, B, and C
Serhud [2]

Answer:

A

Explanation:

Cause it's higher than B

5 0
3 years ago
Organelles are
bixtya [17]

Answer:

o responsible for digestion in the cell

o found outside of the membrane

3 0
3 years ago
What is the molar concentration of phosphate ions in a 0.350 mli3po4 solution?
Mademuasel [1]
When answering the above question or problem, <span>first thing to realize is that the dissolution of the Na3PO4 can be written in a format that may be easier to see what is happening here. </span>

<span>Na3PO4 ----> 3 Na(+) + PO4(-3) </span>

<span>Now, you are starting out with a 0.35 M solution of Na3PO4, but when you dissolve the Na3PO4 into solution there are 3 Na(+) ions made for every Na3PO4 molecule that dissolves. Therefore to calculate the concentration of Na(+) ions in the final solution, take 3 times the inital concentration. 0.35 * 3 = 1.05 M in Na(+)</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • What will happen to the volume if the number of moles of a gas is decreased at constant temperature and pressure?
    10·2 answers
  • A 25.0 ml sample of 0.723 m hclo4 is titrated with a 0.27 m koh solution. the h3o+ concentration after the addition of 80.0 ml o
    10·1 answer
  • At 488 mm Hg, a sample of nitrogen gas occupies 609 mL. What volume does the gas occupy if the temperature remains constant and
    7·1 answer
  • A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode c
    5·1 answer
  • A solution of 2.00 g of para-dichlorobenzene in 50.0 g
    7·1 answer
  • Ceruloplasmin is:Multiple Choicea zinc-containing enzyme in the intestinal wall.a copper-containing enzyme that oxidizes Fe2+ to
    8·1 answer
  • The temperature of a sample of gas at 8.5 atm and 59.2 °C increases to 140.0 °C. If the
    6·1 answer
  • Please help me I’ll give brainliest
    7·2 answers
  • Which, if any, of the following is named incorrectly? *
    9·1 answer
  • What are 2 ways that convection currents in the oceans distribute the sun's energy?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!