Which describes john dalton’s observations of elements in any given compound?

their masses are always equal.

each element always contributes the same number of atoms.

atoms of different elements always combine in the same way.

their volumes are always equal.

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.

What is the molar mass of ca(cio4)2

What is the number of neutrons in an atom with atomic mass of 35