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16 May, 19:17

3. When two atoms of 2H (deuterium) are fused to form one atom of 4He (helium), the total energy evolved is 3.83 * 10-12 joules. What is the total change in mass (in kilograms) for this reaction?

4. The mass of a proton is 1.00728 atomic mass units (amu) and the mass of a neutron is

60Co nucleus whose nuclear mass is 1.00867 amu. What is the mass defect (in amu) of a 27

59.9338 amu? What is the mass defect in kilograms? What is the energy equivalent of this mass in kilojoules?

5. The equation shows one mole of ethanol fuel being burned in oxygen. Convert the energy released into its equivalent mass.

C2H5OH (l) + 3 O2 (g)  2 CO2 (g) + 3 H2O (l) ΔH = - 1418 kJ/mol

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  1. 16 May, 19:22
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    3.

    ∆E = ∆m x c ² ∆m = E / c ² ∆m = 3,83•10^-12 / 3•10^8 ² ∆m = 4,256•10^-29 kg

    Taking this class as well
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