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What masses of each element are present in 7.15 moles of mg(no3)2?

Sagot :

Answer:

As a student when you see such type of questions first thing which should come in your mind is what is the concept hidden in question

It will help in understanding how to calculate individual elements moles

Moles of Mg(NO3)2= 4.12

Mole of “ Mg “ present in compound= 1×4.12moles

Mass of Mg = 4.12× 24

=98.88 g

Moles of “N” present in compound= 2×4.12

= 8.24moles

Mass of N = 8.24 ×14= 115.36g

Moles of”O” present in compound= 6×4.12

= 24.72 moles

Mass of oxygen present in compound= 24.72× 16

=395.52g