If 14.7 grams of NaCl is used, how many grams of Na, will be produced? 2NaCl + Mgo NaNO + MgCl, (Balanced Equation)

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

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.