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Ivan
3 years ago
5

Explain properties of waves and how these properties apply to the quantum model

Chemistry
1 answer:
Alex787 [66]3 years ago
6 0
The existence of atoms began to be accepted around 1910 when many theories called upon the fact that atoms most exist (for example the work of Boltzmann trying to explain entropy, died 1906). At that time atoms were seen as tiny small ball like objects, all matter was composed of. the models have been advanced ever since. Key names that are worth looking up are J. J. Thomson, Rutherford, Bohr and de Broglie. Explain how different observations and experiments led to changes in the atomic model. Many of the models that the men above proposed were created upon what they saw from their experiments. An example is that Niels Bohr wanted to explain the spectral lines in hydrogen, introducing the energy shells are quantized.

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One mL of water is equal to
solniwko [45]

1 milliliter of water (ml)

Equals : 0.04 ounces of water (oz wt.)

Fraction : 1/25 ounces of water (oz wt.)

3 0
4 years ago
30 Points!
olga55 [171]
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4 0
3 years ago
A beam of light passes though a liquid in a test tube without scattering. Which type of mixture is most likely in the test tube?
butalik [34]
The answer would be letter C - solution.

A mixture should be homogeneous for a light not to be scattered. This is because particles are distributed evenly throughout the mixture which allows light to pass directly. In your choices, the solution allows a  beam of light to pass through a liquid in a test tube without scattering.
6 0
4 years ago
Read 2 more answers
Methane is the major component of natural gas. The standard molar enthalpy of formation of methane CH4 is -74.9 kJ/mol. For the
arlik [135]

Answer:

\Delta _rH=-802.2kJ/mol

Explanation:

Hello!

In this case, according to the given chemical reaction, it is possible to calculate the enthalpy change of the reaction via:

\Delta _rH=\Delta _fH_{CO_2}+2\Delta _fH_{H_2O}-\Delta _fH_{CH_4}

Since the enthalpy of formation of oxygen is 0. Thus, given the enthalpies of formation of gaseous carbon dioxide and water, we obtain:

\Delta _rH=(-393.5kJ/mol)+2(-241.8kJ/mol)-(-74.9kJ/mol)\\\\\Delta _rH=-802.2kJ/mol

Best regards!

3 0
3 years ago
Which granulated leukocyte is most likely to be active during a bacterial infection?
77julia77 [94]
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7 0
4 years ago
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