A chemical element is a substance that is made up of only one kind atom.
Add a 8 kid and u are just adding
Answer:
20.0928.
Explanation:
The average atomic mass is (90 * 19.992 + 10* 21) / 100
= 20.0928.
Answer:
endoplasmic reticulum (ER)
Answer:
C
Explanation:
u can't touch a chemical with bare skin
