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2 years ago

What is the energy of an electromagnetic wave that has a wavelength of 0.035 m?

1 answer:

8 0

It seems that you have missed the given choices for this question. But anyway, here is the correct answer. The energy of an electromagnetic wave that has a wavelength of 0.035m is 5.68E-24 J. Hope this is the answer you are looking for. Other choices of this question include the following: 2.16E-35 J, 1.14E7 J, and 8.62E9 J. Thanks for posting your question.

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How do you test for hydrogen?

snow_lady [41]

To test for hydrogen, burn a candle near the suspected source of hydrogen. If you hear a squeaky pop sound, hydrogen is present because when hydrogen gas burns, it makes a squeaky pop sound.

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1 year ago

Read 2 more answers

Which particles in atoms have a negative electric charge?

Verdich [7]

Answer:

Electrons

Explanation:

Atoms both have negative and positive particles

Protons are positive

Electrons are negative

Neutrons are neutral

Nuclei is where you find both neutrons and protons in an atom

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3 years ago

The rate law for a reaction is rate=k[A][B] Which one of the following statements is false? The rate law for a reaction is Which

Andrews [41]

Answer: The reaction is first order overall.

Explanation: Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$Rate=k[A]^x[B]^y$

k= rate constant

For the given rate law:

$Rate=k[A]^1[B]^1$

x = 1= order with respect to A

y =1= order with respect to B

n =( x+y)= (1+1) = 2 = Total order

a) If [A] is doubled, the reaction rate will increase by a factor of 2: True

$Rate'=k[2A]^1[B]^1$

$Rate'=k[2]^1[A]^1[B]^1$

$Rate'=[2]^1\times Rate$

$Rate'=[2]\times Rate$

b) The reaction is first order overall: False

The overall order is 1+1= 2.

c) k is the reaction rate constant: True

$Rate=k[A]^x[B]^y$

k= rate constant

d) The reaction is first order in [B]: True

For the given rate law:

$Rate=k[A]^1[B]^1$

x = 1= order with respect to A

e) The reaction is first order in [A]: True

For the given rate law:

$Rate=k[A]^1[B]^1$

y =1= order with respect to B

3 0

2 years ago

2H2O2 →2H2O +O2 ∆H=?<br><br> 2H2 +O2 → 2H2O ∆H=-572 KJ<br><br> 2H2O2 → 2H2 + 2O2 ∆H=376 KJ

Marat540 [252]

Answer:

WOT in the world is this?

Explanation:

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2 years ago

The Kc for the following is 5.0 at 100 degrees Celsius.

murzikaleks [220]

Answer:

1.40M = [N2O4]

Explanation:

Based on the reaction:

2NO2(g) ⇄ N2O4(g)

Kc is defined as:

Kc = 5.0 = [N2O4] / [NO2]²

<em>Where [] are the concentrations in equilibrium of each gas</em>

As the equilibrium concentration of NO2 is 0.53M:

5.0 = [N2O4] / [0.53]²

5.0 = [N2O4] / [0.2809]

5.0*0.2809 = [N2O4]

5 0

2 years ago