Answer:
The mass of copper = 208.26 grams.
Explanation:
Density = mass / volume
8.9 = mass / 23.4
mass = 8.9 * 23.4
= 208.26 grams.
The burning of fossil fuels to supply the electricity we use is a source of sulfur dioxide and nitrogen oxides. Another source is the burning of fuels to power cars, ...
A cation (+) will be smaller than its neutral atom, while anion (-) will be larger than its neutral atom.
D should be the correct answer. Hope that helps.
the answer is twenty eight
