10. the thing in the slide wasnt centered so the microscope magnefied on nothing 11. mive it tight 12. idk what a um is
Answer:
0.43
Explanation:
divide the given mass by molar mass from the periodic table
I’ve been having problems too honestly lol
Answer:
2
Explanation:
Pb(NO3)2 + 2NaI 2NaNO3 + PbI2