Answer:
300,000km is the speed of light
Basalt, rhyolite, andesite, and obsidian could all be answers.
It is a poly atomic anion because it has more than one atom and a negative charge
A single-displacement reaction, also known as asingle-replacement reaction, is a type of chemicalreaction<span> where an element reacts with a compound and takes the place of another element in that compound. This type of </span>reaction<span> is typically pictured like this: Here, A replaces B in the compound BC.</span>
1 is the number of unpaired electrons in the outer subshell of a Cl atom
