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mylen [45]
3 years ago
8

Did you know that the night sky is an illusion?

Chemistry
1 answer:
o-na [289]3 years ago
3 0

Answer:

no

Explanation:

This absolutly does not prove that time travle is possible becuase.

If you tryed to put a meir 20 thousand light years away it would take you 20 thousand years to get it there, and you would see earth as it is after 20 thousand years of travle,

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I need help in this :(
alexandr402 [8]

Answer:

ok follow me twitter dm me for answer The Kid D is my twitter

Explanation:

6 0
3 years ago
A sample of argon gas (molar mass 40 g) is at four times the absolute temperature of a sample of hydrogen gas (molar mass 2 g).
katen-ka-za [31]

Answer:

Ratio of Vrms of argon to Vrms of hydrogen = 0.316 : 1

Explanation:

The root-mean-square speed measures the average speed of particles in a gas, and is given by the following formula:  

Vrms = \sqrt{3RT/M}

where R is molar gas constant = 8.3145 J/K.mol, T is temperature in kelvin, M is molar mass of gas in Kg/mol

For argon, M = 40/1000 Kg/mol = 0.04 Kg/mol, T = 4T , R = R

Vrms = √(3 * R *4T)/0.04 = √300RT

For hydrogen; M = 1/1000 Kg/mol = 0.001 Kg/mol, T = T, R = R

Vrms = √(3 * R *T)/0.001 = √3000RT

Ratio of Vrms of argon to that of hydrogen = √300RT / √3000RT = 0.316

Ratio of Vrms of argon to that of hydrogen = 0.316 : 1

4 0
4 years ago
How many grams of AgNO3 are needed to make 250 ml of a solution that is 0.135 M
myrzilka [38]

Answer:

( About ) 5.7 grams

Explanation:

Take a look at the attachment below for a proper explanation;

5 0
4 years ago
An engineer is trying to produce as much hydrogen gas as the company can using the equipment they have.
Rainbow [258]

Answer:

See explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem.

8 0
3 years ago
The volume of a fixed mass of a liquid sample increases as the temperature rises from 20 to 40˚c. does the density increase, dec
Mandarinka [93]
Density is the ratio of the substance's mass to volume. To know the effects of temperature on the density of the liquid, we must look at the mass and volume dependence. Mass is always constant, so it is not affected by temperature. For volume, generally, the molecules of the liquid occupy a greater space when heated because of the rapid collisions of the liquid molecules. Thus, as temperature increases, the volume of liquid also increases, although slightly only. That means that density would decrease.
3 0
3 years ago
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