x is the chemical symbol of the element and it must correspond to the atomic number
Basically, they just allow us to see farther into space, therefore letting us see in closer detail what objects in space are made of, such as flaming balls of gas (stars).
Based on the standards of units conversion, to convert from micrometer to meter, we multiply by 10^-6.
Since we there is a square (10^2) to consider, then to convert from micrometer squared to meter squared, we will multiply by (10^-6)^2 as follows:
1.5 <span>μm2 = 1.5 x (10^-6)^2 = 1.5 x 10^-12 meter sqaures</span>
False, that only applies to water as far as I know, but I know for a fact that gold does not melt at 0 degrees Celsius
Milk is best described as a colloid because colloids are mixtures that have particles that do not settle out. Colloids are also not large enough to be easily filtered out, yet they are big enough to be able to scatter light, therefore making the mixture seem cloudy.