Answer:
d
Explanation:
protons and neutrons are in the nucleus which i where most of the mass of an atom comes from
The range of wavelengths of the two series shows that the lines in these two series do not overlap.
<h3>What is Wavelength? </h3>
Wavelength is the distance between two successive curves of a wave. They are the forms of radiation of electromagnetic waves like light waves, radio waves, or heat waves and the distance to the highest peak of the wave is the wavelength. The lights that are visible usually have a wavelength of 400-700 nanometers. For example, when a person shares the same attitude and communicates well with another person. It acts like a yardstick to measure radiation. We measure them from the bottom of one wave to the bottom of the next wave.
To learn more about wavelengths, visit: brainly.com/question/13533093
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Answer:
51.15 × 10²³ moles of MnO₄
Explanation:
Given data:
Number of molecules of MnO₄ = 308 molecule
Number of moles of MnO₄ = ?
Solution:
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.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
For 308 molecules of MnO₄:
308 molecules of MnO₄ × 1 mole / 6.022 × 10²³ molecules of MnO₄
51.15 × 10²³ moles of MnO₄
