Compound A has a molar mass of 100g/mol, the composition of the elements by mass: 40% Ca, 12% C, the rest is O. Give the chemical formula of compound A

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.

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer