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sweet-ann [11.9K]
3 years ago
9

The Kelvin scale is based on the concept of absolute zero.explain the concept

Chemistry
1 answer:
allsm [11]3 years ago
6 0

Answer:Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. ... By international agreement, absolute zero is defined as precisely; 0 K on the Kelvin scale, which is a thermodynamic (absolute) temperature scale; and –273.15 degrees Celsius on the Celsius scale.

Explanation:

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A student ran the following reaction in the laboratory at 242 K: 2NOBr(g) 2NO(g) Br2(g) When she introduced 0.143 moles of NOBr(
gayaneshka [121]

Answer:

1.84 × 10⁻³

Explanation:

Step 1: Write the balanced equation

2 NOBr(g) ⇄ 2 NO(g) + Br₂(g)

Step 2: Calculate the initial concentration of NOBr

0.143 moles of NOBr(g) are introduced into a 1.00 liter container. The molarity is:

M = 0.143 mol / 1.00 L = 0.143 M

Step 3: Make an ICE chart

         2 NOBr(g) ⇄ 2 NO(g) + Br₂(g)

I             0.143               0           0

C              -2x               +2x        +x

E          0.143-2x            2x          x

Step 4: Find the value of x

The equilibrium concentration of NOBr(g) was 0.108 M. Then,

0.143-2x = 0.108

x = 0.0175

Step 5: Calculate the concentrations at equilibrium

[NOBr] = 0.108 M

[NO] = 2x = 0.0350 M

[Br₂] = x = 0.0175 M

Step 6: Calculate the equilibrium constant (Kc)

Kc = [0.0350]² × [0.0175] / [0.108]²

Kc = 1.84 × 10⁻³

7 0
3 years ago
What is the wavelength of radiation with a frequency of 3.68 X 10^12 /s?
konstantin123 [22]

Answer:

The wavelength of radiation = 8.2 x 10⁻⁵

Explanation:

by the formula

v x λ = C

v = frequency  

λ = wavelength

C = speed of light (3 x 10⁸ m/s)

λ = C / v

λ = 3 x 10⁸ / 3.68 x 10^{12}

λ = 8.2 x 10⁻⁵

6 0
3 years ago
The process of melting is what type of process? Choose the correct process and explanation.
fredd [130]

Answer:

I think it’s b

Explanation:

6 0
3 years ago
3.9 X 1022 molecules of CO2 = _ moles of CO2
agasfer [191]

Answer:

moles CO2 = 0.065 moles

Explanation:

  • mole = 6.022 E23 molecules.....Avogadro

∴ molecules CO2 = 3.9 E22 molecules

⇒ moles CO2 = (3.9 E22 molecules CO2)×( moles CO2/ 6.022 E23 molecules CO2)

⇒ moles CO2 = 0.065 moles

7 0
3 years ago
Is scientific notation used to express large numbers in convenient form?
max2010maxim [7]
Sometimes true depending on your problem
5 0
3 years ago
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