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3 years ago

Who wasthe first person who suggested that matter was made up of atoms

Chemistry

2 answers:

vodomira [7]3 years ago

7 0

The Greek philosopher Leucippus of Miletus and his student Democritus of Abdera.

ipn [44]3 years ago

6 0

Answer:

democritus

Explanation:

looks like a whole perv if you ask me

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Glass is an example of a(n) ________ solid

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2 years ago

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8. The time period of artificial satellite in a circular orbit of radius R is T. The radius of the orbit in which time period is

Elena-2011 [213]

Explanation:

It is given that,

The time period of artificial satellite in a circular orbit of radius R is T. The relation between the time period and the radius is given by :

$T^2\propto R^3$

The radius of the orbit in which time period is 8T is R'. So, the relation is given by :

$(\dfrac{T}{T'})^2=(\dfrac{R}{R'})^3$

$(\dfrac{T}{8T})^2=(\dfrac{R}{R'})^3$

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So, the radius of the orbit in which time period is 8T is 4R. Hence, this is the required solution.

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3 years ago

3: Consider molecules of hydrogen (tiny ones) and oxygen (bigger ones) in a gas mixture. If they have the same average kinetic e

mezya [45]

Answer: Hydrogen molecules will have greatest average speed.

Explanation:

The formula for average speed is :

$\mu_{av}={\sqrt{\frac{8RT}{\pi\times M}}}$

R = gas constant

T = temperature

M = Molecular Mass

Now putting all the values:

$\frac{\nu_{H_2}}{\nu_{O_2}}=\sqrt{\frac{8RT}{\pi\times M_{H_2}}}/{\sqrt{\frac{8RT}{\pi\times M_{O_2}}}$

$\frac{\nu_{H_2}}{\nu_{O_2}}=\sqrt{\frac{16}{2}}$

$\frac{\nu_{av}_{H_2}}{\nu_{av}_{O_2}}=8$

Thus average speed of hydrogen is 8 times the average speed of oxygen. Thus hydrogen molecules will have greatest average speed

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2 years ago

Which properties do not change the composition of a substance?

Nina [5.8K]

Answer:

Physical Properties

Explanation:

PHYSICAL PROPERTY

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3 years ago

Who wasthe first person who suggested that matter was made up of atoms ​

Who wasthe first person who suggested that matter was made up of atoms