Astudent is monitoring the pressure of a gas in a rigid container. the amount of gas particles and the volume of the container are held constant. how will the pressure be affected if the container is cooled over time?

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.

May someone me with these science questions

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule