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2 years ago

9

What is released in the process of an atom moving from an excited level to a lower energy level? (2 points) a photon an electron

an ion a proton

1 answer:

Tcecarenko [31]2 years ago

3 0

An electron is the correct answer

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Which of thes statements about heating up land and water is true

777dan777 [17]

Answer:

b its radiant energy that heats up the earth.

Explanation:

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2 years ago

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At a certain temperature the rate of this reaction is first order in SO₃ with a rate constant of 0.208 s⁻¹:

NNADVOKAT [17]

Answer:

0.30 M

Explanation:

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t = ?

$[A_0]$ is the initial concentration = 1.36 M

k is the rate constant = 0.208 s⁻¹

t = 7.30 seconds

So,

$[A_t]=1.36\times e^{-0.208\times 7.30}\ M=0.30\ M$

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2 years ago

Jordan needs to repeat the experiment but his teacher says that he needs to improve his design in his second experiment what sho

Margarita [4]

Just add more detail in the second experiment explain every little thing.

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2 years ago

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An 8 N force is applied to a 2 kg object. What is the magnitude of the object's acceleration? A. 0.25 m/s² B. 4 m/s² C. 6 m/s² D

mel-nik [20]

Answer: 4m/s2 (B)

Explanation:

Force = mass × acceleration

Force given is 8N

Mass=2kg

Acceleration =?

Substitute into the formula

F=ma

8=2a

A=8/2

A=4m/s2

Acceleration used is 4m/s2 (B)

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2 years ago

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Help pls! Answer all of it. Idk if what I wrote is correct.

trasher [3.6K]

The reaction is actually endothermic because delta H is positive, indicating that it absorbing heat.

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3 years ago