Just breaking stuff so yea that’s it
Balanced:
1. <span>Na2O + H2O ---> 2NaOH
2. </span><span>K2O + H2O ---> 2KOH
3. </span><span>MgO + H2O ---> Mg(OH)2
4. </span><span>CaO + H2O ---> Ca(OH)2
5. </span><span>SO2 + H2O ⇄ H2SO3
6. </span>SO3 + H2O ---> H2SO4
All except by 2 were balanced.
Hmm, friction maybe? I guess it depends on how fast she stopped?
The answer is D, location, because you'd have moved spots that could be altered.
160.0g
Mass =volume x density = 200.0 mL x 0.8 g/mL= 160.0 g