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gayaneshka [121]
4 years ago
11

How fast do you think the air particles in this room are moving compared to a car going 50 mph (about 22m/s)? Put your answer is

in the form, 'a molecule travels ___ as fast as a car"
Chemistry
1 answer:
Minchanka [31]4 years ago
5 0

The average molecule of air is moving at speed of 500 m /s and thus

speed of air particle = 500 m /s

speed of car = 22 m /s

Whereas, the speed of molecule /speed of car = 500 /22 = 22.72

Thus, molecule travel at 22.72 times faster than speed of car.

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What is the overall cell potential for this redox reaction?
Zina [86]
Oxid  # :     0          0                   +2        -1

equation:Cl_{2}  +  Ni -----\ \textgreater \   Ni^{2+}  +  2Cl ^{-}

∴ the nickel was oxidized while chlorine was reduced

nickel reduction potential =  - 0.25 V
              but since it is being oxidised the you have to switch the integer sign so the 
              the potential of nickel in this case becomes + 0.25 V

chlorine was reduced thus its reduction potential remains same  = + 1.36 V

Overall Cell potential  =  ∑ of half cell potential

The overall cell potential  =  (+ 1.36) + (+ 0.25)
                                         =   + 1.61 V

∴ the answer would be D

4 0
3 years ago
Ibigay ang kahulugan nito ayun sa paliliwanag<br>konduktor piloto drayber makinista​
Westkost [7]

Answer:

konduktor

- ang konduktor ay maaaring isang konduktor nga koryente, train o isang taong namumuno sa isang orkestra o isang grupo ng mga mang-aawit.

piloto

-isang tao na tagalipad ng ereplano

drayber

- isang tao na nagmamaniho ng sasakyan

makinista

-ay isang tao na nagpapakilos o nagpapagana ng makina

please give me brainliest.

6 0
3 years ago
The most unusual characteristic of Uranus is _____.
fiasKO [112]

Answer:

the axis is tilted at 98 degrees

Explanation:

Uranus is blue, not green; it has an atmosphere of hydrogen and helium, not methane.  While it does have an icy cold temperature, that's not a very unusual characteristic for an outer planet.  However, the tilt of the axis is unusual; no other planet is tilted almost completely on its side!

6 0
4 years ago
How many kPa are in 2,150 mmHg?<br> 2.83 kPa<br> 287 kPa<br> 1.61 ´ 104 kPa<br> 2.18 ´ 105 kPa
vlabodo [156]

Answer:

2150 mmHg ( 1 atm / 760 mmHg ) ( 101.325 kPa / 1 atm ) = 286.643 kPa

Therefore, the closest value from the choices is the second one which has the value of 287, this would be answer.

Explanation:

I stole diss from someone else so Im juss hopin iss right

3 0
3 years ago
Read 2 more answers
Acids have a high concentration of ...
GrogVix [38]

Answer:

Acids have a high concentration of [H⁺] ions

Explanation:

In order to know about the acids, a solution is acidic when pH < 7

As pH is lower than 7, the pOH > 7

When pH = 7, solution is neutral

When pH is greater than 7, solution is basic

pH = - log [H⁺]

pOH = - log [OH⁻]

Imagine a solution of pure HCl 0.2 M

HCl → H⁺ + OH⁻

[H⁺] = 0.2 M → pH = - log 0.2 → 0.69

pH + pOH = 14

pOH = 14 - 0.69 = 13.31

10^-pOH = [OH⁻] → 10⁻¹³°³¹ = 4.89ₓ10⁻¹⁴

In conclussion [H⁺] > [OH⁻]

8 0
4 years ago
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