Answer:
The environment of space is lethal without appropriate protection: the greatest threat in the vacuum of space derives from the lack of oxygen and pressure, although temperature and radiation also pose risks. The effects of space exposure can result in ebullism, hypoxia, hypocapnia, and decompression sickness.
Physical
When something is cooling it isn’t changing it’s chemical composition so it’s physical
Answer:
The answer is
<h2>0.2 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula
<h3>
</h3>
From the question
mass of object = 20 g
volume = 100 mL
Substitute the values into the above formula and solve
That's
We have the final answer as
<h3>0.2 g/mL</h3>
Hope this helps you
Answer:
metaltoids like mercury can become solid and liquid and are called semiconductors