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Chemistry 18 Online
OpenStudy (anonymous):

proton help

OpenStudy (anonymous):

is that Co like Cobalt?

OpenStudy (anonymous):

this is what i have so far The mass defect of a nucleus would be 0.56342 amu. The mass defect in kilograms is 9.355 × 10-28 kilograms.

OpenStudy (anonymous):

Yes Co as in colbalt

OpenStudy (anonymous):

I just need help on What is the energy equivalent of this mass in kilojoules?

OpenStudy (anonymous):

calculate the mass of cobalt due to protons and neutrons. Subtract the mass you get from 59.9338 . The remaining mass is mass defect (in amu). Convert this to kg For energy equivalent. Multiply the mass defect you get by 931.5 MeV to get your answer

OpenStudy (anonymous):

The mass defect of a nucleus would be 0.56342 amu. The mass defect in kilograms is 9.355 × 10-28 kilograms. ^ am i correct?

OpenStudy (anonymous):

931.5 MeV is the answer for energy equivalent.????

OpenStudy (anonymous):

Nope. (Mass defect * 931.5 MeV) is the answer for energy equivalent.

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

After you have done that. 1MeV = 10^6 eV = 1.6 *10^(-13) J

OpenStudy (anonymous):

0.56342 x 931.5 = ?

OpenStudy (anonymous):

is that how it should be?

OpenStudy (anonymous):

0.56342 x 931.5 x 1.6 *10^(-13)

OpenStudy (anonymous):

This is to get the answer in joules

OpenStudy (anonymous):

8.39721168 × 10^-11?

OpenStudy (anonymous):

is that the answer?

OpenStudy (anonymous):

energy equivalent of this mass in joules = 8.39721168 × 10^-11 J Therefore What is the energy equivalent of this mass in kilojoules?

OpenStudy (anonymous):

Im really confused..

OpenStudy (anonymous):

1 kilojoules = 10^3 joules Now try :)

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

8.39721168 × 10^-14

OpenStudy (anonymous):

@Hayatcakes , you are right

OpenStudy (anonymous):

But make sure you always write the units while writing the answer

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