Fe (iron) has 26
protons,30 neutrons and 26 electrons. In order to calculate the binding energy,
first you need to find the total mass of all particles in the nucleus:
<span>
<span>26 x mass of proton + 30 x mass of neutron ( all in a.m.u.) =
say "m" </span></span>
<span>
Mass defect is m- 55.9207 amu, then convert it into grams and
put in equation E = mc2 to get binding energy of Fe.</span>
<span> Divide it by number of nucleons to get binding
energy per nucleon</span>.
One box is 120g.
mass of 126 boxes = 126*120 = 15120 g
(note: used an additional significant figure when first digit is a 1, so four significant figures)
Using the conversion 1 lb. = 453.6 g/lb
15120g = 15120 g / (453.6 g/lb) = 15120 g * (1/453.6) lb/g = 33.3 lbs. (3 significant figures)
The vapor molecules have greater KE than the liquid ones have. That"s how they break free of the liquid and waft away.
Answer:
the answer would be "B"
Explanation:
Elements with the same number of valence electrons are found in the same column of the Periodic Table. All elements in the first column of the Periodic Table have 1 valence electron in an s orbital. These elements are known as Group 1A metals or alkali metals.
Answer:
A
Explanation:
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