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3 years ago

Which wave has the longest wavelength ?Shortest?

Chemistry

2 answers:

Aliun [14]3 years ago

8 0

Answer: Longest wavelength - Radio wave

Shortest wavelength - Gamma wave

Explanation:

Radio waves have longer wavelengths and they have low energy in the electromagnetic spectrum. These waves have low frequency as well. Such waves are used for radio communication as they can help in transfer of signals due to longer wavelength, satellites and computer networks.

Gamma waves have shortest wavelength in the electromagnetic spectrum. They have have the highest frequencies. These are the penetrating rays and they are produced by the radioactive decay of nuclei of the atom. These waves are used for sterilization and also for disinfection.

PilotLPTM [1.2K]3 years ago

3 0

Answer:

a p e x

Explanation:

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Calculate the molarity of 29.0g of ethanol (C2H5OH) in 545 mL of solution.

BigorU [14]

Molar mass ethanol:

C2H5OH = 12 x 2+ 1 x 5 + 16 + 1 = 46.0 g/mol

volume = 545 mL in liters: 545 / 1000 => 0.545 L

number of moles:

29.0 / 46.0 => 0.6304 moles

M = n / V

M = 0.6304 / 0.545

M = 1.156 mol/L

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3 years ago

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Why does the hull of an ocean -going ship rust quickly?

stepan [7]

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3 years ago

Which of the following pairs of elements is most likely to form an ionic compound? a oxygen and fluorine b sodium and aluminum c

irina [24]

An ionic compound consists of a metal AND a non-metal.

<em>Option A:</em>

Oxygen and fluorine are non-metals.

<em>Option B:</em>

Sodium and aluminium are non-metals.

<em>Option C:</em>

Calcium is a metal and chlorine is a non-metal.

<em>Option D:</em>

Nitrogen and sulfur are non-metals.

Thus, the answer is C.

4 0

3 years ago

A water bottle has a mass of 14.0g. Given a density of 1.38g/cm^3, what is the volume of the plastic used to make the water bott

Kipish [7]

Answer:

$\boxed{\sf Volume \ of \ plastic \ used = 10.14 \ cm^3}$

Given:

Mass = 14.0 g

Density ( $\rho$ ) = 1.38 g/cm³

To Find:

Volume (V)of the plastic used to make water bottle

Explanation:

Formula:

$\boxed{ \bold{Density \ (\rho) = \frac{Mass \ (m)}{Volume \ (V)}}}$

Substituting value of m & density in the formula:

$\sf \implies 1.38 = \frac{14.0}{V} \\ \\ \sf \implies V = \frac{14.0}{1.38} \\ \\ \sf \implies V = 10.14 \ cm^3$

$\therefore$

Volume of the plastic used to make water bottle = 10.14 cm³

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3 years ago

Write the condensed ground-state electron configurations of these transition metal ions, and state which are paramagnetic:

serg [7]

The ground-state electron configurations of $Cd^{2+}$ transition metal ions are diamagnetic [Kr] $4d^{10}$ . The ion is diamagnetic because there all electrons are paired.

<h3>What is Diamagnetic?</h3>

A magnetic field repels diamagnetic materials because it induces an opposing magnetic field in them when it is applied, which produces a repelling force.
In contrast, a magnetic field draws paramagnetic and ferromagnetic materials together.
All materials experience the quantum mechanical phenomenon known as diamagnetism, which is the only source of magnetism in a material.
The magnetic dipoles within paramagnetic and ferromagnetic materials exert an attracting force that outweighs the modest diamagnetic force.
Diamagnetic materials have a magnetic permeability that is less than vacuum, or 0.
Although superconductors behave as strong diamagnets, diamagnetism is often a modest effect that can only be observed by sophisticated laboratory equipment.

To learn more about Diamagnetic with the given link

brainly.com/question/15462756

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8 0

2 years ago