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Galina-37 [17]
3 years ago
11

20. Rank the states of matter from slowest to fastest particle speed.

Chemistry
2 answers:
Korvikt [17]3 years ago
8 0

the light is the fastest.

alex41 [277]3 years ago
5 0
I know that light is the fastest.
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What are the benefits of hydro energy ?
zepelin [54]

Answer:

Its powered by water

Explanation:

Its clean fuel source, meaning that it wont polute the air

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3 years ago
A fish tank holds 45 gal of water. How many kilograms of water are in the fish tank?
larisa [96]

Answer:

How to convert 45 gal to kg? You can use the following formula to convert from Gallon to Kilograms :

X(kg) = y(gal) / 0.264172053

To convert 45 Gallon to Kilograms:

X(oz) = 45(gal) / 0.264172053

Answer: 170.3435 kg

7 0
2 years ago
A 46.9 gram sample of a substance has a volume of about 3.5 centimeters3. It is solid at a room temperature of 23ºC. Out of the
horrorfan [7]

Answer : (C) Hafnium is the most likely identity of the given substance.

Solution :  Given,

Mass of given substance (m) = 46.9 g

Volume of given substance (V) = 3.5 Cm^{3}

First, find the Density of given substance.

Formula used :    

Density=\frac{\text{Mass of given substance}}{\text{Voume of given substance}}

Now,put all the values in this formula, we get

Density=\frac{46.9 g}{3.5 Cm^{3} } = 13.4 g/Cm^{3}

So, we conclude that the density of given substance (13.4 g/Cm^{3}) is approximately equal to the density of Mercury and Hafnium (13.53 and 13.31 g/Cm^{3} respectively).

According to the question the substance is solid at room temperature but Mercury is liquid at room temperature. So, Mercury is not identical to the given substance.

Another element i.e, Hafnium is the element whose density is approximately equal to the given substance and also solid at room temperature. And we know that the melting point of solid is high.

So, Hafnium is the most likely element which is the identity of the given substance.

3 0
3 years ago
Read 2 more answers
What type of reaction is shown below? Check all that apply. 2Mg+O2—> 2MgO
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Answer:

Reaction types are :

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  • Oxidation (O added to Mg)
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7 0
3 years ago
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Do cells divide twice in asexual reproduction, sexual reproduction, or both?
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Cells divide in asexual reproduction!


I hope this helps 



please mark me as brainliestt!!
8 0
3 years ago
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