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Harrizon [31]
2 years ago
5

Questions and answers about isotopes grade 8 I need this for a PowerPoint exam projects

Chemistry
1 answer:
DanielleElmas [232]2 years ago
3 0

Answer:

Question: A patient is diagnosed with a damage in the thyroid gland.

Which isotope is used to treat the patient?

Option:

A. Copper-64

B. Cobalt-60

C. Carbon-14

D. Iodine-131

Correct answer : D. Iodine-131

Question: Give the definition of isotopes.

Answer : Isotopes is the atoms of elements with the same proton number but different number of neutrons.

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Emma strikes a match and sets some logs on fire. As the fire burns, which two forms of energy are released?
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Answer:

Explanation:

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7 0
3 years ago
When blood passes through the lungs, carbon dioxide and water are formed from carbonic acid dissolved in the blood. The carbon d
NeTakaya
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CO₂ is carbon (IV) oxide or carbon dioxide.<span>
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7 0
4 years ago
Read 2 more answers
ΔU for a van der Waals gas increases by 475 J in an expansion process, and the magnitude of w is 93.0 J.
timofeeve [1]

Complete question:

ΔU for a van der Waals gas increases by 475 J in an expansion process, and the magnitude of w is 93.0 J. calculate the magnitude of q for the process.

Answer:

The magnitude of q for the process 568 J.

Explanation:

Given;

change in internal energy of the gas, ΔU = 475 J

work done by the gas, w = 93 J

heat added to the system, = q

During gas expansion process, heat is added to the gas.

Apply the first law of thermodynamic to determine the magnitude of heat added to the gas.

ΔU = q - w

q = ΔU +  w

q = 475 J  +  93 J

q = 568 J

Therefore, the magnitude of q for the process 568 J.

6 0
3 years ago
Which property is better explained by the band theory than by the sea-of-electrons model?
Sonbull [250]
Luster is the correct answer.
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Which two types of consumers are known as “nature’s clean-up crew”? Why are they important?
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Fungus: Important because it breaks up several dead leaves, particles, etc, and puts nutrients back in the ground.

Carnivores: eat dead animals, no stinky rotten meat around.

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3 years ago
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