Which of the following is not an example of a physical change?

condensation of water vapor in the atmosphere

stretching of a rubber band until it breaks

freezing of a sugar solution to form a popsicle

precipitation of a solid from the combination of two liquids

How will the emission of an alpha particle affect the atomic number of an atom

Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.

How many valence electrons are in atom of radon?