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ohaa [14]
2 years ago
6

HEY EVERYONE its poofett my account got deleted for no absolute reason! >:D​

Chemistry
2 answers:
PilotLPTM [1.2K]2 years ago
5 0

Answer:

am very sorry

Explanation:

marshall27 [118]2 years ago
3 0
Sorry, someone must have repeatedly reported your account
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A small container of perfume is opened in a classroom. Soon every student in the room smells the perfume. Explain this in terms
melamori03 [73]

Answer: possibly diffusion

Explanation:

all particles are in motion unless at a certain degree so they'd spread throughout the room diluting as they continue to spread out.

6 0
2 years ago
Which of the following is an example of a pure substance? *
Natali [406]

Answer:

Iron shavings

Explanation:

A substance that has a fixed chemical composition throughout and a mixture is when two or more substances are combined, but they are not combined chemically.

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2 years ago
Which refers to the chemical name for NO2?
Anna35 [415]

Answer:

C

Explanation:

6 0
3 years ago
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Which of the following scientists came up with the first widely recognized atomic theory?. . A. John Dalton. . B. Antione Lavois
Yuri [45]
"John Dalton" is the one scientist among the following choices given in the question that <span>came up with the first widely recognized atomic theory. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has come to your help.</span>
8 0
3 years ago
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1. a.) Calculate the wavelength of light which has a frequency of 5.25 x 10 14 Hz.
Scilla [17]
<h3>Answer:</h3>

5.71 × 10² nm

<h3>Explanation:</h3>

The product of wavelength and frequency of a wave gives the speed of the wave.

Therefore;

Velocity of wave = Wavelength × Frequency

c = f ×λ

In our case;

Frequency = 5.25 × 10^14 Hz

Speed of light = 2.998 × 10^8m/s

But;

λ = c ÷ f

  = 2.998 × 10^8m/s ÷  5.25 × 10^14 Hz

  = 5.71 × 10^-7 m

But; 1 M = 10^9 nm

Therefore;

wavelength = 5.71 × 10^-7 × 10^9

                  = 5.71 × 10² nm

The wavelength of light wave 5.71 × 10² nm

3 0
3 years ago
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