Which of the following best defines one mole of a substance?

a. mass, in grams, of each particle of the substance.
b. mass, in grams, of the nuclear us of the substance’s atoms.
c. amount of substance present in one atom of the substance
d. amount of substance present in avogadro‘s number of particles of the substance

What is the atomic number of an atom that has 6 protons

Is a chemical message sent by another individual.

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.