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Alina [70]
3 years ago
14

A scientist has a sample of uranium–238 (U–238) that is decaying to thorium–234 (Th–234). During the transmutation, a gamma ray

is emitted from the nucleus. The thorium–234 daughter particle does not decay quickly enough to be detected. What kind of storage container should he store the sample in to reduce radiation exposure? Explain your answer.
Chemistry
1 answer:
kykrilka [37]3 years ago
5 0

Answer:

  • <u>The container must be built of lead, and it should be kept in a concrete vault.</u>

Explanation:

The goal is to contain the <em>gamma rays</em> to<em> reduce</em> the <em>exposure </em>to their harmful <em>radiation</em>.

The gamma rays are the most energetic electromagnetic radiation: they have the smallest wavelength, the largest frequency, and the largest energy from all the electromagnetic radiations.

Due to that, only very dense substances like lead and concrete can stop the gamma rays. In the case of concrete, large blocks with thick walls are required.

Thus, in a lab the best container for a sample of uranium - 238 that is decaying, emitting gamma rays, must be built of lead, and enclosed in a conrete vault.

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Water, air, buildings, food, and everything visible and invisible have mass and takes up space. What is the word used to describ
Sunny_sXe [5.5K]

Answer:

Matter

hope this helps

5 0
3 years ago
Write the formula of the conjugate acid of HCO₂⁻.
Alex

Taking into account the Brønsted-Lowry acid-base theory, the conjugate acid of HCO₂⁻ is H₂CO₂.

<h3>Brønsted-Lowry acid-base </h3>

The Brønsted-Lowry acid-base theory (or the Brønsted-Lowry theory) identifies acids and bases based on whether the species accepts or donates protons or H⁺.

According to this theory, acids are proton donors while bases are proton acceptors. That is, an acid is a species that donates an H⁺ proton while a base is a chemical species that accepts an H⁺ proton from the acid.

So, reactions between acids and bases are H⁺ proton transfer reactions.

<h3>Conjugate base and conjugate acid</h3>

Then, a conjugate base is an ion or molecule resulting from the acid that loses the proton, while a conjugate acid is an ion or molecule resulting from the base that gains the proton:

acid + base ⇄ conjugate base + conjugate acid

<h3>Conjugate acid of HCO₂⁻</h3>

Like a conjugate acid is an ion or molecule resulting from the base that gains the proton, the conjugate acid of HCO₂⁻ is H₂CO₂.

Learn more about the Brønsted-Lowry acid-base theory:

<u>brainly.com/question/12916250?referrer=searchResults</u>

<u>brainly.com/question/1191429?referrer=searchResults</u>

<u>brainly.com/question/4000152?referrer=searchResults</u>

<u>brainly.com/question/12808135?referrer=searchResults</u>

7 0
2 years ago
Rewrite this measurement with a simpler unit, if possible. <br> 8.3 kg•m^2/ s^2
Feliz [49]

Answer: 8.3 J

Explanation:

We have the following measurement:

8.3 \frac{kg m^{2}}{s^{2}}

Rearranging the units:

8.3 \frac{kg m}{s^{2}}m

Since 1 Newton is 1 N=1 \frac{kg m}{s^{2}}:

8.3 Nm

Since 1 Joule is 1 J=1 Nm:

8.3 J This is the simplest form possible

7 0
3 years ago
The following is a sample question for brainliest. Brainliest will be given to the person who can answer the following question
Amanda [17]

Answer:

Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds, how they can change, and the energy that is released or absorbed when they change. Traditionally, chemistry has been broken into five main subdisciplines: Organic, Analytical, Physical, Inorganic and Biochemistry. Chemistry is involved in everything we do. The reason why chemistry touches everything we do is because almost everything in existence can be broken down into chemical building blocks.

Explanation:

Hope this helps

8 0
3 years ago
As the temperature of water increases its density
fiasKO [112]

Answer:

B

Explanation:

The warmer the water, the more space it takes up, and the lower its density.

6 0
2 years ago
Read 2 more answers
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