A horse gallops along a racecourse at a speed of 40 km/h. It takes the horse 3 minutes to run the length of the track.
1 answer:
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Answer:
8 electrons
Explanation:
Phosphorous is the element of group 15 and third period. The atomic number of chlorine is 15 and the symbol of the element is P.
The electronic configuration of the element phosphorus is:-
Thus, from the electronic configuration shown above,
In n = 2, the total number of electrons are 8 which are present in
Answer:
5.8 moles of copper are needed to react with sulfur to produce 2.9 moles of copper (I) sulfide.
Explanation:
Moles of copper(I) sufide = 2.9 mol
According to reaction, 1 mole of copper(I) sulfide is obtained from 2 moles of copper, then 2.9 moles of copper(I) sulfide will be obtained from :
copper
5.8 moles of copper are needed to react with sulfur to produce 2.9 moles of copper (I) sulfide.