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grandymaker [24]
2 years ago
13

What is the Wavelength of the frequency of 1.54 Hz

Chemistry
1 answer:
julsineya [31]2 years ago
4 0

Answer:

\lambda=1.94\times 10^8\ m

Explanation:

Given that,

The frequency of a wave, f = 1.54 Hz

We need to find the wavelength of the wave.

The relation between wavelength, frequency and speed is given by :

c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{1.54}\\\\\lambda=1.94\times 10^8\ m

So, the wavelength of the wave is 1.94\times 10^8\ m.

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If there are 94 different kinds of naturally occurring atoms how many different naturally occurring elements are there?
Delicious77 [7]

Answer:

118 elements

Explanation:

Of these 118 elements, 94 occur naturally on Earth.

7 0
3 years ago
PLZZ HELP!! If light traveling through air is then passed through glass, what is the result?
Radda [10]

Answer : The light rays are bent and refraction will occur - B.

5 0
3 years ago
What is the mass, in grams, of 122 atoms of aluminum? Round your answer to proper significant figures.
tangare [24]

Answer:

Mass = 547.02 × 10⁻²³g

Explanation:

Given data:

Number of atoms of Al = 122 atom

Mass in gram = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

122 atom/6.022 × 10²³ atoms ×  1 mol

20.26× 10⁻²³ mol

Mass in gram:

Mass = number of moles  × molar mass

Mass = 20.26× 10⁻²³ mol  × 27 g/mol

Mass = 547.02 × 10⁻²³g

6 0
3 years ago
A bottle of wine contains 9.81 grams of C2H5OH, dissolved in 87.5 grams of water. The final volume of the solution is 100.0 mL.
dimulka [17.4K]

Answer:

[EtOH] = 2.2M and Wt% EtOH = 10.1% (w/w)

Explanation:

1. Molarity = moles solute / Volume solution in Liters

=> moles solute = mass solute / formula weight of solute = 9.8g/46g·mol⁻¹ = 0.213mol EtOH

=> volume of solution (assuming density of final solution is 1.0g/ml) ...

volume solution =  9.81gEtOH + 87.5gH₂O = 97.31g solution x 1g/ml = 97.31ml = 0.09731 Liter solution

Concentration (Molarity) = moles/Liters = 0.213mol/0.09731L = 2.2M in EtOH

2. Weight Percent EtOH in solution (assuming density of final solution is 1.0g/ml)

From part 1 => [EtOH] = 2.2M in EtOH = 2.2moles EtOH/1.0L soln

= {(2.2mol)(46g/mol)]/1000g soln] x 100% = 10.1% (w/w) in EtOH.

3 0
3 years ago
1. Most of the earth's surface is covered with
frozen [14]

Answer: water

Explanation:if you look at a globe most of it is blue and blue on a globe is water so that means water covers most of the earth

5 0
3 years ago
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