A. isotopes only hve different mass which is caused by additional/lesser neutron. protons and electrons number are fixed
Answer:
A They are attracted to a magnet
Answer:
Your answer is ATOM
Explanation:
Atoms consist of a nucleus made of protons and neutrons orbited by electrons. Atoms are the basic units of matter and the defining structure of elements.
Basically, they are the building block of life because everything made of matter has atoms
The actual mass is 904.4g but with correct number of sig figs it’s 904g.
1 mole ------------ 6.02x10²³ molecules
? moles ----------- 9.0345x10²⁴ molecules
( 9.0345x10²⁴) x 1 / 6.02x10²³ =
9.0345x10²⁴ / 6.02x10²³ => 15.007 moles