All categories

2 years ago

What is the velocity of a electron whose wavelength is 100 pm?

Chemistry

1 answer:

Anni [7]2 years ago

5 0

Answer:

v = 7.3 × 10⁶ m/s

Explanation:

Given data:

Velocity of electron = ?

Wavelength = 100 pm

Solution:

Formula:

λ = h/mv

λ = wavelength

h = planck's constant

m = mass

v = velocity

Now we will put the values in formula.

100 ×10⁻¹² m = 6.63 × 10⁻³⁴ j.s / 9.109 × 10⁻³¹ kg × v

v = 6.63 × 10⁻³⁴ kg.m²/s / 9.109 × 10⁻³¹ kg ×100 ×10⁻¹² m

v = 6.63 × 10⁻³⁴ m/s /910.9 × 10⁻⁴³

v = 0.0073 × 10⁹ m/s

v = 7.3 × 10⁶ m/s

You might be interested in

Of rational function<br>1<br>3. + 3 < 0<br>3x-1<br>nctions.

pshichka [43]

Answer:

I didn't understand questions properly. Sorry

4 0

2 years ago

I'd really appreciate help- this is due in around 8 hours :"D

Fed [463]

Answer:

atomic #= 1

protons equals one
Number of neutrons equals to 0
number of electrons equal to 1
mass number equals to 1

atomic number equals to 1
Protons equals to 1
number of neutrons equals to 0
number of electrons equals to 0 because the plus sign means that it loses an electron
mass number equals to 1

atomic number 17
number of protons 17
number of neutrons 18
number for electrons 18 Because negative sign means It's an anion which means it gains an electron
mass number 35

12
12
12
10 loses 2 its a cation
24

47
47
108-47 = 61
46 loses 1
108

16
16
32-16 =16
18 it gains 2 electrons
32

there u go

7 0

1 year ago

An oil tanker spills a large amount of oil near the ocean shoreline. Which application of chemistry would best solve this proble

DochEvi [55]

I have heard they can use hair is stocking or nets to absorb the oil out of the water

3 0

2 years ago

Chemistry. Will mark Brainly.

kogti [31]

Answer:

c is right

Explanation:

8 0

2 years ago

Which of the following choices has the compounds correctly arranged in order of increasing solubility in water? (least soluble t

larisa86 [58]

Answer: Option (d) is the correct answer.

Explanation:

As it is known that like dissolves like. So, water being a polar compound is able to dissolve only polar compounds.

Hence, a compound that is ionic or polar in nature will readily dissolve in water. Whereas non-polar compounds will be insoluble in water.

As $CCl_{4}$ is a non-polar compound. Hence, it is insoluble in water.

On the other hand, $CHCl_{3}$ is a polar compound due to difference in electronegativity of chlorine and carbon atom there will be development of partial charges. Hence, there will be dipole-dipole forces existing between them.

Whereas $NaNO_{3}$ is an ionic compound and it will readily dissociate into ions when dissolved in water. Also, there will be ion-dipole interactions between sodium and nitrate ions.

Hence, $NaNO_{3}$ will readily dissolve in water.

Thus, we can conclude that the compounds correctly arranged in order of increasing solubility in water are $CCl_{4}$ < $CHCl_{3}$ < $NaNO_{3}$ .

6 0

2 years ago