I'm not the best with science but I believe the answer is B. Na.
False
only observing chemical property will change its identity
Answer:
B. Composed of molecules relatively far apart.
Explanation:
The gas we call "air" has molecules that are relatively far apart.
Catalase speed up the chemical reaction of the substrate to give out the product faster than the time planned
Hello!
To solve this question we are going to use the
Avogadro's Number, which tells us how many molecules of a given substance are in a mole. The Avogadro's number is
6,02*10²³ molecules/mol, and we are going to use this value in the following conversion factor:

So, there are 1
,69*10²⁴ molecules of SO₂ in 2,8 moles.
Have a nice day!