Answer:
D, Mixture
Explanation:
Mixtures can be separated physically because that's just how the world works
D. mixture.
For example a solid and a liquid may be separated by filtration.
Potential energy
Answer:6.94
Molar mass of CaCO3=40+12+16×3
=40+12+48=100g/mol
Moles=mass of substance/molar mass
=97mg/100g=0.097/100=0.00097moles/L.
PH=-log[CaCo3]=-log(0.00097)=6.94
P.s it's log to base e
smoky air
fresh river water
just did the assignment
