Answer:
B
Explanation:
machanical waves like sea waves need a medium.
but electromagnetic waves never need a medium
but can also travel through medium
Answer:
A
Explanation:
because they are non polar so would not conduct electricity :)
One can tell by looking at the titration curve of an acid and base whether the acid used is a strong acid or a weak acid. For a titration of a strong acid and a strong base, the pH at the equivalence point will be neutral, that is, pH 7. If the titration involves a weak acid and a strong base, the pH at the equivalence point will not be neutral, the solution will be basic at the equivalence point.
Offspring are more rapidly reproduced
Answer: 2,1,1
Explanation: (2)Na2HPO4=(1)Na4P2O7+(1)H20
