Answer:
James Chadwick
Explanation:
In his first experiment, Rutherford was unable to predict the total mass of nucleus. He noticed that if only electrons and protons are present in the nucleus then by adding their masses, it falls short of the net mass of the atom. so he concluded that there must be another particle and that Particle was later discovered by James Chadwick in 1932.
Answer:
600 seconds, or 10 minutes
Explanation:
300m/ 0.5m = 600s
The average atomic mass of iron is the sum of the products of the percentage abundance and masses of the isotopes. That is,
average atomic mass = 0.0582 x 53.940 amu + 0.9166 x 55.935 amu + 0.0219 x 56.935 amu + 0.0033 x 57.933 amu = 55.847 amu
Thus, the average atomic mass of iron is approximately 55.847 amu.
Hydrochloric acid<span> is known as a monoprotic </span>acid<span> because it loses one hydrogen ion when it is dissolved in water. It is one of seven strong </span>acids<span>. The base sodium hydroxide is more commonly known as lye. It is used in the manufacture of products such as soap, paper and detergent.</span>
