Answer:
The weight of the object on earth =441N
Weight of the object on moon = 72N
Explanation:
Weight of a body is the product of its mass and acceleration due to gravity. Acceleration due to gravity varies between planetary bodies. The acceleration due to gravity on earth is 9.8 m/s² while on moon is 1.6m/s² and it goes different for others too.
Weight = Mass * acceleration due to gravity
Weight(e) = weight on earth
Weight (m) = weight on moon
Weight(e) = 45 * 9.8 = 441N
Weight (m) = 45 * 1.6 = 72N
Weight of a body is measured in a unit called Newton(N)
Answer:The approximate atomic mass of lead is 207.24 amu.
Explanation:
Abundance of isotope (I) = 1.4% = 0.014
Atomic mass of the Isotope (I) = number protons + number of neutrons = 82 + 122 = 204 amu
Abundance of isotope (II) = 22.1 % = 0.221
Atomic mass of the Isotope (II) = number protons + number of neutrons = 82 + 125 = 207 amu
Abundance of isotope (III) = 24.1% = 0.241
Atomic mass of the Isotope (III) = number protons + number of neutrons = 82 + 124 = 206 amu
Abundance of isotope (IV) = 52.4% = 0.524
Atomic mass of the Isotope (IV) = number protons + number of neutrons = 82 + 126 = 208 amu
Average atomic mass of an element =
Average atomic mass of lead =
The approximate atomic mass of lead is 207.24 amu.
Answer:
Iron has 8 valence electrons
Explanation:
Isotopes are basically from the same element. In terms of subatomic particles of the element, the isotopes will then basically have the same number of protons. The electrons also have to be same in number given that the elements are in neutral charges.
We are then left with neutrons, which is one of the subatomic particles residing in the nucleus of an atom.
Thus, the answer is NEUTRONS.