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larisa [96]
3 years ago
5

Identify the processes involved in changes of state between liquids and solids

Chemistry
1 answer:
artcher [175]3 years ago
3 0
Liquid is water or drink and solid is hard
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Some instruments differentiate individual quanta of electromagnetic radiation based on their energies. assume such an instrument
bulgar [2K]

Answer:

5.68×10¯¹⁰ m

Explanation:

From the question given above, the following data were obtained:

Energy (E) = 3.50×10¯¹⁶ J

Wavelength (λ) =?

Energy (E) and wavelength (λ) are related according to the following formula:

E = hv/λ

Where

E => is the energy

h => is the Planck's constant

v => is the velocity of electromagnetic radiation

λ => is the wavelength of the radiation.

With the above formula, we can obtain the wavelength of the radiation as follow:

Energy (E) = 3.50×10¯¹⁶ J

Planck's constant (h) = 6.63×10¯³⁴ Js

Velocity (v) = 3×10⁸ m/s

Wavelength (λ) =?

E = hv/λ

3.50×10¯¹⁶ = 6.63×10¯³⁴ × 3×10⁸ / λ

3.50×10¯¹⁶ = 1.989×10¯²⁵/ λ

Cross multiply

3.50×10¯¹⁶ × λ = 1.989×10¯²⁵

Divide both side by 3.50×10¯¹⁶

λ = 1.989×10¯²⁵ / 3.50×10¯¹⁶

λ = 5.68×10¯¹⁰ m

Thus, the wavelength of the radiation is

5.68×10¯¹⁰ m

7 0
3 years ago
Part 1: name two elements that have the same properties as sodium (na). (4 points) part 2: determine the number of protons, elec
Maslowich

  • Part 1: Two elements with the same properties as Sodium(Na) are Lithium(Li) and Potassium(K).
  • Part 2: Calcium(Ca) has 20 protons, 20 electrons and 20 neutrons.

  • Elements that have the same properties ( physical and chemical ) are usually found on the same group. A group ( also called family ) in chemistry, means a column or a vertical line of elements in the periodic table of elements. Elements in the same group are similar because they have the same number of electrons in their outermost shell. The two most common elements found in the same group as Sodium(Na) are Lithium(Li) and Potassium(K). All three elements are in Group 1, have 1 electron in their outermost shell and are highly electropositive.

  • The number of protons in any atom is always equal to the atomic number of that element, usually denoted by the letter Z. From the periodic table of elements, The atomic number of Calcium(Ca) is 20, so the number of protons will be 20. The number of electrons in any given atom is also equal to the number of protons in that atom, therefore the number of electrons in Calcium(Ca) is also 20. To find the number of neutrons, subtract the number of protons from the atomic mass as;                                                                       Atomic mass = Number of protons + Number of neutrons         Calcium(Ca) has an atomic mass of 40, so it's number of neutrons will be;                                                                                                         40 - 20 = 20 neutrons                                                                   Hence, Calcium(Ca) has 20 protons, 20 electrons, and 20     neutrons.

To know more about elements and the periodic table, go to;

brainly.com/question/14347616    

#SPJ4  

                                       

5 0
2 years ago
Which is an example of a reversible physical change?
Effectus [21]

Examples of reversible changes. Melting: Melting is when solid converts into a liquid after heating. Example of melting is turning of ice into water. ... Example of boiling is turning water into water vapour.

8 0
3 years ago
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What indicator of a chemical reaction could be measured using a thermometer?
Oksana_A [137]

Answer:

heat production

Explanation:

7 0
3 years ago
Do all the words in a sentence do the same job​
Vilka [71]

Answer:

<h2>No all the words in a sentence have their different job..</h2>

<h3>stay safe healthy and happy</h3>
7 0
3 years ago
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