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zimovet [89]
3 years ago
8

A scientist observed changes in the gas pressure of one mole od a grass in a sealed chamber with a fixed volume. To identify the

source of the change, the scientist should check for variations in the
A. Air pressure
B. Molecular formula
C. Temperature of the chamber
D. Isotopes of the gas
Chemistry
1 answer:
bixtya [17]3 years ago
8 0
C. Temperature of the chamber. As temperature increases, pressure increases. As temp decreases, pressure decreases. 
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Which type of wave is this?
mixer [17]

Answer:

A Transverse Wave

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3 years ago
Rank the following transitions in a hydrogen atom in order of increasing wavelength of electromagnetic radiation that could prod
Dmitrij [34]

Answer:

n=2 to n=4 < n=6 to n=8 < n=10 to n=12 < n=14 to n=16

Explanation:

According to Neils Bohr, electrons in an atom are found in specified energy levels. Transitions are possible from one energy level to another when the electron receives sufficient energy usually in the form of a photon of electromagnetic radiation of appropriate frequency and wavelength. The energy of this photon corresponds to the energy difference between the two energy levels. Thus the higher the energy difference between energy levels, the greater the energy of the photon required to cause the transition and the shorter the wavelength of the photon.

High energy photons have a very short wavelength. It should be noted that as n increases, the energy of successive energy levels decreases and transitions between them now occurs at longer wavelengths. Hence, the highest energy and shortest wavelength of photons are required for transition involving lower values of n because such electrons are closer to the nucleus and are more tightly bound to it than electrons found at a greater distance from the nucleus.

Hence transition involving electrons at higher energy levels occur at a longer wavelength compared to transition involving electrons closer to the nucleus. This is the basis for the arrangement of wavelengths required to effect the various electronic transitions shown in the answer.

3 0
3 years ago
Please help!!!!!!!!!!!!!!!!!!!
zimovet [89]

Answer:

Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. Breaking down sugar produces the energy your body needs.

Explanation:

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3 0
3 years ago
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Sedaia [141]

Answer:

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Explanation:

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5 0
3 years ago
How many atoms are there in 7.6 moles of Iron?
Harlamova29_29 [7]

Answer:

45.77 × 10²³ atoms

Explanation:

Given data:

Number of moles of iron = 7.6 mol

Number of atoms = ?

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

7.6 mol  ×  6.022 × 10²³ atoms / 1 mol

45.77 × 10²³ atoms

5 0
3 years ago
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