Quartz is a substance because the material has uniform properties throughout and is held together via chemical bonds.
Beef and cheddar I believe!!!
I believe that the answer is D.
I hope this helps. :)
Answer:
0.001 M OH-
Explanation:
[OH-] = 10^-pOH, so
pOH + pH = 14 and 14 - pH = pOH
14 - 11 = 3
[OH⁻] = 10⁻³ ; [OH-] = 0.001 M OH-
