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Maurinko [17]
3 years ago
15

PLEASE HELP I BEG YOU I REALY NEED HELP

Chemistry
2 answers:
Korvikt [17]3 years ago
5 0

Answer: 1. Physical change

2. volume

3. true

Explanation:

padilas [110]3 years ago
3 0

Answer: 1

Explanation:

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marissa [1.9K]

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No bro that bro had it coming he should have known when to stop

Explanation:

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3 years ago
NO ONE ANSWERS MY QUESTIONS
leva [86]

Answer:

where is the answer options because it sounds like I need some

3 0
2 years ago
Assertion (A): Naphthalene balls disappear with time without leaving any solid.
gogolik [260]

Explanation:

a) Both A and R are true and R is the correct

explanation of A.

7 0
1 year ago
Read 2 more answers
I need help please, thanks!
oee [108]

Answer:

This question is somehow not clear, because a typical human eye can notice objects which have wavelengths from about 380 to 740 nanometers. This is called visible spectrum (the portion of the electromagnetic spectrum that is visible to the human eye). Electromagnetic radiation in this range of wavelengths is called visible light or simply light.

Someone even can see extra colors - they able to see beyond the visible spectrum. The reason that the human eye can see the spectrum is because those specific wavelengths stimulate the retina in the human eye. The human retina can only detect incident light that falls in waves from about 380 to 740 nanometers long, so we can’t see microwave or ultraviolet wavelengths. This also applies to infrared lights which has wavelengths longer than visible and shorter than microwaves, thus being invisible to the human eye.

In conclusion, the human eye can not notice that objects with wavelength not in the range of 380 to 740 nanometers.

Explanation:

5 0
3 years ago
According to naming rules, the types of compound that use prefixes in their names are ________.
arlik [135]

Answer:

Covalent compounds.

Explanation:

Hello,

In this case, when forming chemical bonds in order to form compounds, we say that if electrons are shared, covalent compounds are to be formed and they usually have subscripts that need prefixes to be named, for instance phosphorous pentachloride (PCl5), dichlorine heptoxide (Cl2O7), carbon tetrachloride (CCl4) and many others.

Regards.

6 0
3 years ago
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