How do you find the mass defect of nitrogen?

Answer 1

The mass defect is 0.108 506 u.

The discrepancy between the calculated mass—which is the total mass of the protons and neutrons—and the nucleus's actual mass is known as the mass defect.

1. Calculate the total mass of the 7 protons and 7 neutrons in one nucleus of #""_7^14"N"#.

#"Calculated mass" = 7 color(red)(cancel(color(black)("protons"))) × "1.007 276 u"/(1 color(red)(cancel(color(black)("proton")))) + 7 color(red)(cancel(color(black)("neutrons"))) × "1.008 664 u"/ (1 color(red)(cancel(color(black)("neutron")))) = "7.050 932 u + 7.060 648 u" = "14.111 580 u"#

2. #"Actual mass of"color(white)(l) _7^14"N"= "14.003 074 u"#

Determine the mass defect.

#"Mass defect" = "calculated mass - actual mass" = "14.111 580 u - 14.003 074 u" = "0.108 506 u"#

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Answer 2

Ellie Andrews

To find the mass defect of nitrogen, you subtract the mass of the nucleus of the nitrogen atom from the sum of the masses of its individual protons and neutrons.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.