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Cloud [144]
3 years ago
9

Help I need to finish my chemistry report.

Chemistry
1 answer:
Alexeev081 [22]3 years ago
4 0
The thing that they have in common is that they are all non metals
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Can anyone help me with the calculations for the Frequency, Wavelength, Energy Chart?
sergeinik [125]
Use the following equations to fill the chart.

E = hf
where
h = 6.63 x 10⁻³⁴ J/s, Planck's constant
f = frequency Hz
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c = fλ
where
c = 3 x 10⁸ m/s, the velocity of light
λ = wavelength, m

If energy is given in J/mmol, divide by Avogadro's number, N = 6.02 x 10²³, to convert it to J.

The completed table is shown below.

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3 years ago
Calculate the quantity 87.3 cm − 1.655 cm. _____cm
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Answer:

the answer is 85.645cm

4 0
3 years ago
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_______ waves occur when the motion of the medium is parallel to the direction of the wave.
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3 years ago
An acid and a base react to form salt and water. Which of the following best describes this type of chemical reaction? Redox Neu
I am Lyosha [343]

Answer:

Neutralization

Explanation:

When an acid react with base it form the salt and  water. The reaction is also called neutralization reaction because both neutralize each other.

In neutralization reaction equal amount of acid and base react to neutralize each other and equal amount of water and salt are formed. When pH does not reach to 7 its means there is less amount of one of reactant which is not fully neutralize.

Neutralization reactions are also used as first aid. For example when someone is dealing with HCl for cleaning purpose of toilet and get touched. It is advised to neutralize it with soap, milk or egg white.

Example:

Hydrochloric acid when react with the sodium hydroxide, a salt sodium chloride and water are formed.

Chemical equation:

HCl + NaOH → NaCl + H₂O

Titration:

Neutralization reactions are also used to determine the concentration of solution. Titration is a quantitative technique in which acid or base is gradually added into the solution whose concentration is to be determine until the neutral point is reached.

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3 years ago
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Sound waves move the slowest through which medium :<br> water<br> ice<br> air<br> wood
sasho [114]

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Sounds travel slowest in gasses so it would be air

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