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2 years ago

Which statement is true about nuclear decay?

Chemistry

2 answers:

rewona [7]2 years ago

4 0

<h2><u><em>Your answer would be (D) Nuclear decay rates are affected by atmospheric pressure.</em></u></h2>

Let me know if this helped.

meriva2 years ago

4 0

Answer: Nuclear decay rates are constant

Explanation: Nuclear or radioactive decay occurs when energy is lost in unstable atoms, with emitting radiation. In this case, there are radioactive alpha, beta, gamma and other particles. In fact, this process presupposes the spontaneous transformation of unstable atomic nuclei. The characteristic of such processes is half-life, which represents a time period necessary for half of the amount of radioactive material to decay. It is not always predictable when a particular radioactive particle from an unstable atomic nucleus will be emitted, but <em>the decay rate over time is constant</em>.

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What are Seismic waves?

Vikki [24]

Answer:

Seismic waves are waves of energy that travel through Earth's layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy

Explanation:

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2 years ago

Question 12 of 25

NISA [10]

Answer:

B. Equal amounts of all gases have the same volume at the same

conditions

Explanation:

Amedo Avogadro found the relationship between volume of a gas and the number of molecules contained in the volume.

The law states that "equal volumes of all gases at the same temperature and pressure contains equal number of molecules or moles".

The law describes the behavior of gases when involve in chemical reactions. It enables one to change over at will in any statement about gases from volumes to molecules and vice versa.

So, the right option is B which implies that equal amounts of all gases have the same volume at the same conditions.

8 0

2 years ago

Suppose that Daniel has a 3.00 3.00 L bottle that contains a mixture of O 2 O2 , N 2 N2 , and CO 2 CO2 under a total pressure of

Alenkinab [10]

Answer:

Partial pressure O₂ → 2.74 atm

Explanation:

Let's analyse the data given:

Volume → 3L

In the bottle there is a mixture of gases that contains, O₂, N₂ and CO₂.

Total pressure is 4.80 atm

Let's apply the Ideal Gases Law to determine the total moles of the mixture

P . V = n . R. T

4.80 atm . 3L = n . 0.082 . 273K

n = 4.80 atm . 3L / 0.082 . 273K → 0.643 moles

We apply the concept of mole fraction:

Mole fraction of a gas X = moles of gas X / Total moles

Mole fraction of a gas X = Partial pressure X / Total pressure

In a mixture, sum of mole fraction of each gas = 1

We determine mole fraction of N₂ → 0.230 / 0.643 = 0.357

We determine mole fraction of CO₂ → 0.350 atm / 4.80 atm = 0.0729

1 - mole fraction N₂ - mole fraction CO₂ = mole fraction O₂

1 - 0.357 - 0.0729 = 0.5701 → mole fraction O₂

We replace in the formula: Mole fraction O₂ = Partial pressure O₂ / 4.80 atm

0.5701 . 4.80 atm = Partial pressure O₂ → 2.74 atm

5 0

2 years ago

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a friend is trying to describe a material to you. which of the following is not a description of a physical property of the subs

jonny [76]

C. when combined with water, it fizzes.

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3 years ago

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I will give brainiest how does a orange get its color

marysya [2.9K]

Answer:

by mixing red and yellow

Explanation:

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3 years ago

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