CHEMISTRY MIDDLE SCHOOL

What is the wavelength of a light frequency 7.21x10^14Hz

Answers

Answer 1

Answer:

Answer:

6.0 x 105

Explanation:

Answer 2

Answer:

Answer:6.0 x l05

Explanation:

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What is the mass of 5.50 mol of pure liquid bromine ?

Answers

Answer:

m Br = 439.472 g

Explanation:

mass Br = ?

∴ mol Br = 5.50 mol

∴ molar mass Br 79.904 g/mol

mass = (mol)*(g/mol)

⇒ m Br = (5.50 mol)*(79.904 g/mol)

⇒ m Br = 439.472 g

Why aren't the atomic masses of most elements whole numbers

Answers

Isotopes and most average aren't whole numbers

Which of the following describe hybrid atomic orbitals? check all that apply a mixture of all atomic orbitals in an atom a mixture of the valence orbitals in an atom There are as many hybrid orbitals as there are electrons in an atom. There are as many hybrid orbitals as there are valence electrons in an atom. There are as many hybrid orbitals as there are valence orbitals that mix together. have a different shape and a different energy than the atomic orbitals of which they are made have the same shape but a different energy than the atomic orbitals of which they are made

Answers

The hybrid atomic orbitals are formed by the combination of the valence orbitals on an atom. The hybrid orbitals formed have different energy and shape compared to the atomic orbitals that combine to form the hybrid orbitals. Hybrid orbitals help in explaining the shapes of the molecules and other bonding properties.

Therefore the correct answer will be,

b. A mixture of the valence orbitals in an atom

e. There are as many hybrid orbitals as there are valence orbitals that mix together.

f. Hybrid orbitals have a different shape and different energy than the atomic orbitals of which they are made

Which diagram shows electrons violating the Pauli exclusion principle? A box contains an up arrow.A box contains an up arrow.A box contains an up arrow. A box contains an up and a down arrow.A box contains an up and a down arrow.A box contains an up and a down arrow. A box contains an up and a down arrow.A box contains 2 up arrows.A box contains 2 up arrows. A box contains an up and a down arrow.A box contains an up and a down arrow.A box contains an up arrow.

Answers

The diagram which shows electrons violating the Pauli exclusion principle is: C. a box containing an up and a down arrow and 2 other up arrows.

What is the Pauli exclusion principle?

The Pauli exclusion principle can be defined as a principle which states that no two electrons (fermions) in a single atom can have the same values for all four (4) of their electronic quantum numbers.

Furthermore, this principle states that the orbital of an atom can only contain a maximum of two electrons, and they must have opposing spin orientations.

In conclusion, the diagram which shows electrons violating the Pauli exclusion principle is a box containing an up and a down arrow and 2 other boxes with 2 up arrows,that are having the same spin orientations as shown.

Read more on Pauli exclusion principle here: brainly.com/question/10386902

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Answer:

Explanation:

Which element is commonly found in meteorites A. Carbon

B.Oxygen

C.Hydrogen

D.Iron