What is a mole? And how do I calculate it?

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

What is the mass of phosphorous in a 51-kg person

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.