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Masteriza [31]
2 years ago
10

How long is radioactive waste from nuclear plants radioactive?

Chemistry
2 answers:
Anettt [7]2 years ago
8 0

Answer:about 10,000 years b maybe

Explanation:Strontium-90 and cesium-137 have half-lives of about 30 years (half the radioactivity will decay in 30 years). Plutonium-239 has a half-life of 24,000 years. High-level wastes are hazardous because they produce fatal radiation doses during short periods of direct exposure.

Pavlova-9 [17]2 years ago
5 0
It can stay radioactive from 1,000 to 10,000 years. I honestly don’t know which answer to choose but it’s going to be between those two.
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A 25.0g tin sample was placed in boiling water at 99.5 C until it had the same temperature. Afterwards, the tin sample was place
MrMuchimi

Answer : The specific heat of tin is, 0.213 J/g.K

Explanation :

Formula used :

q=m\times c\times (T_{final}-T_{initial})

where,

q = amount of heat lost = -399.4 J

c = specific heat capacity of tin = ?

m = mass of tin = 25.0 g

T_{final} = final temperature = 24.5^oC=273+24.5=297.5K

T_{initial} = initial temperature = 99.5^oC=273+99.5=372.5K

Now put all the given values in the above formula, we get:

-399.4J=25.0g\times c\times (297.5-372.5)K

c=0.213J/g.K

Therefore, the specific heat of tin is, 0.213 J/g.K

7 0
3 years ago
Consider the model of the nitrogen atom which electron configuration matches the model
san4es73 [151]

Answer:

           1s², 2s², 2p³  

Explanation:

The atomic number of Nitrogen is seven. So it contains seven protons and seven electrons in neutral form. Also, the electronic configuration cited above contains seven electrons among which two electrons are present in first shell and five electrons are present in valence shell respectively.

8 0
2 years ago
A precipitate of lead(II) chromate can be formed using the reaction below.
Marina86 [1]

Answer:

hi

Explanation:

7 0
3 years ago
Evaluate each statement and determine which statement is not a determining factor in the formation of intrusive igneous rocks? G
sladkih [1.3K]

Answer: The statement that is not a determining factor in formation of intrusive igneous rocks is 'None of the above' and Magma cools very fast beneath the Earth's surface.

Explanation:

Rocks are naturally occurring solid materials that are made up of different types of minerals which affects it's texture and colours. The three main types of rocks are:

--> sedimentary rocks,

--> metamorphic rocks and

--> igneous rocks.

Igneous rocks are formed from the crystallization and solidification of hot molten rocks which originates from deep within the earth. Depending on where the molten rock solidifies, the igneous rock is divided into two, namely:

--> intrusive igneous rock and

--> extrusive igneous rock.

The INTRUSIVE IGNEOUS rocks are formed within or deep beneath the earth surface when the hot magma SLOWLY cools over millions of years until it solidifies. The slow cooling allows large crystals to grow.

Therefore the statements (None of the above and Magma cools very fast beneath the Earth's surface) are not a determining factor.

7 0
3 years ago
Methane is combusted with Oxygen to produce Carbon Dioxide and Water. How many grams of oxygen are required to react with 55 gra
Rom4ik [11]
The answer is B.110 g
7 0
3 years ago
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