Atomic radius of copper atom (r)= 128 pm
volume of sphere = 4/3 * pi * r^3 = 4/3 * 3.14 * 128^3
volume = 8780076.373 pm^3
We have a 3-colour vision which happens to be the primary colours: red, blue and yellow. So, we can see red, and that is why we see it.
To see other we just mix the different cells as if we where mixing paint to get a new colour.
Hope it was easy to understand,
Happy homework/ study/ exam!
Matter is more likely to exist in a solid state as the temperature is lowered. Matter is more likely to exist in the gas state as the pressure is reduced.
Methanol will float on glycerine.
The word identity is a mistake. The question asks for the density of a cube of metal with the measures and mass given.
Density = mass / volume
mass = 35.45 g
volume of a cube = (length of the side) ^ 3 = (1.5 cm)^3 = 3.375 cm^3
Density = 35.45 g / 3.375 cm^3 = 10.50 g / cm^3.
Answer: 10.50 g / cm^3