Answer:
Electrons are the only subatomic particles that have a negative charge.
Light is emitted in the visible spectrum to nearly all energies, so in the spectrum of the Sun you can see all colours. This is clearly not a continuous spectrum, but still represents visible radiation, divided into its component colours.
I think it has a negative reaction.
The number of grams of copper reacted is 445 grams
<u><em>calculation</em></u>
2Cu +O₂ → 2CuO
from equation above the mole ratio of Cu:CUO is 2:2 =1:1, therefore the moles of Cu is also= 7.00 moles
mass=moles x molar mass
from periodic table the molar mass of Cu= 63.5 g/mol
mass= 7.00 moles x 63.5 g/mol =445 grams