Answer: if I'm not wrong I think the answer Is A
Answer:
last one
Explanation:
protists, bacteria, plants
Explanation:
Such problems, including homelessness, teen parenting, substance abuse,, complicate students' efforts to learn. Other social problems, such as vandalism, school violence, and the dropout rate, are exacerbated when students feel alienated from the school structure.
Answer:
4.13×10^22 atoms
Explanation:
1. Find number of moles
mole=mass/rmm of compound
mole= 3.50/102
mole= 7/204 mol
2. Multiply it with avagadros constant( 6.02×10^23 particles)
7/204 × 6.02×10^23= 2.0657×10^22
3. Multiply it with the number of ALMINIUM ATOMS IN AL203( which is 2 atoms)
2.0657×10^22 × 2
you get 4.13×10^22 atoms
