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ArbitrLikvidat [17]
3 years ago
8

What is the wavelength of electromagnetic radiation with a frequency of 9.23 × 10^-7 Hz?

Chemistry
1 answer:
stich3 [128]3 years ago
4 0

3.25 x 10¹⁴m

Explanation:

Given parameters:

Frequency of the radiation = 9.23 x 10⁻⁷hz

Unknown:

Wavelength of the radiation = ?

Solution:

The velocity of electromagnetic radiation is the same as that of the speed of light in vacuums.

  Velocity = frequency x wavelength.

 Velocity = 3  x 10⁸m/s

Since the unknown is wavelength, we factor it out:

    Wavelength = \frac{Velocity }{frequency}

    Wavelength = \frac{x}{y}\frac{ 3 x 10^{8} }{9.23 x 10^{-7} }

                          = 3.25 x 10¹⁴m

learn more:

Wavelength brainly.com/question/6352445

#learnwithBrainly

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A hydrate is compound that included water molecules within its crystal structure. During an experiment to determine the percent
stellarik [79]

Answer:

The percent by mass of water in this crystal is:

  • <u>21.4%</u>

Explanation:

This exercise can be easily solved using a simple rule of three where the initial weight of the hydrated crystal (6,235 g) is taken into account as 100% of the mass, and the percentage to which the mass of 4.90 g corresponds (after getting warm). First, the values and unknown variable are established:

  • 6,235 g = 100%
  • 4.90 g = X

And the value of the variable X is found:

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  • X = approximately 78.6%.

The calculated value is not yet the percentage of the water, since the water after heating the glass has evaporated, therefore, the remaining percentage must be taken, which can be calculated by subtraction:

  • Water percentage = Total percentage - Percentage after heating.
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4 0
3 years ago
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Select the appropriate words to fill in the blanks. A solution in which no more solute can be dissolved in is referred to as ___
Temka [501]

Answer:

A solution in which no more solute can be dissolved in is referred to as SATURATED. In such a solution, the concentration of solute is called SOLUBILITY . When that concentration is reported in moles per liter, it is more specifically called MOLAR SOLUBILITY. A special equilibrium constant called the SOLUBILITY PRODUCT constant is calculated from the molar concentrations of the aqueous components of the dissolution equation.

Explanation:

The solubility of a solute in a solvent is the maximum amount of solute in moles that will be dissolved in 1dm3 of the solvent at a specified temperature. Once the maximum number or concentration has been reached, the solvent can no longer take in solutes and this point in the reaction, the solution is said to be saturated. That is the composition of the saturated solution is not affected by the presence of excess solute. An unsaturated solution has a lower concentration of solute and can dissolve more solutes if added until it becomes saturated.

Solubility when reported in moles per liter is called molar solubility of the solution and it gives a more accurate measurement of yh solubility of a solution. The solubility product constant is calculated from the molar concentrations of the aqueous components of the dissolution equation. This solubility product constant explains the balance between dissolved ions from the salt and undissolved salt in a dissolution equation.

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3 years ago
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Pollen is produced in the anthers, which are the _______ organs of flowers.
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D, since the anther is a male organ
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m_a_m_a [10]

Answer:

Pu-239

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Beta decay moves the element which undergoes the decay one place to the right in the periodic table since to conserve charge and being beta radiations an  electron we convert a neutron into a proton and an electron. In neutron capture we increase the atomic mas by one unit. We that in mind, lets solve the question:

U-238 + ₁⁰ n ⇒ U-239 ⇒ Np -239 +  ₋₁⁰β ⇒ Pu-239 +  ₋₁⁰β

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Explain the way ammonia, salt, and water are alike
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