John’s balloon contains 4.79 L of He at 298 K. At what temperature will the helium gas inside of his balloon reach of volume of 5.06 L? Assume gas pressure remains constant.

Compare and contrast the bohr model and the electron cloud models of the atom.

Stage in which a typical star has completely stopped fusion

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.