10 points
A type of Lead (Pb) ion has a + 4 oxidation number. Sulfur (S) has a - 2
oxidation number. What would be the chemical formula for the
compound of these two elements? (Note: numbers in formulas are
suppose to be in subscript format)
*
Pb204
Pb02
PbO
Pb+40-2

the answer to your question is high voltage and high currency

hello there!

your answer is a “generator”

a generator does not create energy but instead it transforms it.

it’s basically a motor working in reverse.

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

3. dark matter

empty space could also be a simple vacuum