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Ostrovityanka [42]
3 years ago
12

Please please please help

Chemistry
1 answer:
sashaice [31]3 years ago
7 0

Answer:

AU9NJ-BLVHV-TCLJS-54YTB

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Calculate the ratio of the velocity of helium atoms to the velocity of neon atoms at the same temperature.
o-na [289]

Answer:

vHe / vNe = 2.24

Explanation:

To obtain the velocity of an ideal gas you must use the formula:

v = √3RT / √M

Where R is gas constant (8.314 kgm²/s²molK); T is temperature and M is molar mass of the gas (4x10⁻³kg/mol for helium and 20,18x10⁻³ kg/mol for neon). Thus:

vHe = √3×8.314 kgm²/s²molK×T / √4x10⁻³kg/mol

vNe = √3×8.314 kgm²/s²molK×T / √20.18x10⁻³kg/mol

The ratio is:

vHe / vNe = √3×8.314 kgm²/s²molK×T / √4x10⁻³kg/mol / √3×8.314 kgm²/s²molK×T / √20.18x10⁻³kg/mol

vHe / vNe = √20.18x10⁻³kg/mol / √4x10⁻³kg/mol

<em>vHe / vNe = 2.24</em>

<em />

I hope it helps!

8 0
3 years ago
Convert to standard notation.<br> 9.3 x 10^-5
ziro4ka [17]

Answer:

9.3 x 10^ -5 in standard notation is 0.000093

Explanation:

Since 10 is raised to a -5, this means that there should be 5 zeros before the non-zero digits

8 0
3 years ago
Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 1 s. what is your acceleration?
GREYUIT [131]
A = change in velocity / time
so change in velocity = 13-7 = 6
so 6/1 =6:
acceleration = 6m/s^2
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One of the advantages of nylon over rayon is that nylon:
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- is a natural fibre
- has low elasticity
- is wrinkle free.
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The picture below shows an open field with wildflowers.
Ahat [919]

Answer:

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