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Sergeeva-Olga [200]
3 years ago
10

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

Chemistry
1 answer:
Anni [7]3 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

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in a given homologous series of hydrocarbons, the boiling point generally increases as the size of the molecules increases. the
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The boiling point of hydrocarbons generally increases as the size of the molecules increases because more bonds are needs to be broken in larger organic molecules.

<h3>What are hydrocarbons?</h3>

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The homologous series include

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If you had continued following the water molecule in the Water Cycle Activity, what step do you predict would have occurred next
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In the water molecule activity here, precipitation will occur because water is being released from the atmosphere into the earth.

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An element has an average atomic mass of 1.008 amu. It consists of two isotopes , one having a mass of 1.007 amu, and one having
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Answer:

The most abundant isotope is 1.007 amu.

Explanation:

Given data:

Average atomic mass = 1.008 amu

Mass of first isotope = 1.007 amu

Mass of 2nd isotope = 2.014 amu

Most abundant isotope = ?

Solution:

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X for the isotopes having mass  2.014 amu

1-x for isotopes having mass 1.007 amu

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we will use the following equation,

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What is the pH of a solution of 1 x 10-5 M NaOH? Is the solution acidic or basic?
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