When given a compound, adding up all of the _______ of all of the individual atoms within one molecule of a compound will determ
2 answers:
Answer:
D. atomic masses
Explanation:
Molecular formulas is the actual number of atoms of each element in the compound. Molecular mass is the sum of the mass of each element which is present in the molecular formula is multiplied by their subscript which appear in the molecular formula.
For example,
The formula is =
Mass from the formula = 4×Mass of Carbon + Mass of Hydrogen×1 + Mass of oxygen = 4×12 + 8×1 + 16= 72 g/mol
Thus, Correct option is - <u>D. atomic masses</u>
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Answer:
(a) The self inductance, L = 21.95 mH
(b) The energy stored, E = 4.84 J
(c) the time, t = 0.154 s
Explanation:
(a) Self inductance is calculated as;
where;
N is the number of turns = 1000 loops
μ is the permeability of free space = 4π x 10⁻⁷ H/m
l is the length of the inductor, = 45 cm = 0.45 m
A is the area of the inductor (given diameter = 10 cm = 0.1 m)
(b) The energy stored in the inductor when 21 A current ;
(c) time it can be turned off if the induced emf cannot exceed 3.0 V;