Answer:
a sound wave with moves through the air
Diamond and <span>Graphite are some allotropes.
btw love your icon of Harry :)</span>
Explanation:
The volume of the copper block is:

The density of copper is 8.96 g/cm³
So the mass of the copper block is

or 126.44352 kg.
A thermal insulator because it would keep the heat in
a)
OCH₃⁻ + H₂O → CH₃OH <em>(methanol) </em>+ OH⁻ <em>(hydroxide)</em>
here, the methoxide ion acted as a base, by bonding with the hydrogen atom released by water to form methanol and hydronium ion
b)
ClO⁻ + H₂O → HClO + OH⁻ <em>(hydroxide)</em>
The Hypochlorite ion bonded with the proton released by water, to form Hypochlorous acid and hydronium ion