I believe it's 6789 times 10^4. I could be wrong, due to the fact that I don't remember what's the definition of the scientific notion. I hope this helps, or at least gives you an idea! :D
It looks all correct to me, great job!
They are called precipitates.
Answer:
turtle
Explanation:
they are slow and they take there time
Answer:
16
Explanation:
number of electrons should also be 16.