Oxygen-16 (15.994915 amu) is synthesized in the sun by fusion of carbon-12 (12. amu) and helium-4
(4.00260 amu). how much energy is released in this nuclear reaction?
3.82 x 10-18 kj
x 10-15
1.20 x 101

1.142 × 10⁻¹⁵ kJ

Explanation:

Total mass of C-12 and He-4 = 12.00000 + 4.00260 = 16.00260 amu

mass of O-16 = 15.99495 amu

Difference in mass = 16.00260 - 15.99495 = 0.00765 amu

The difference in mass 0.00765 is converted into energy.

It is known that,

1 amu = 931.46 MeV

then,

0.00765 amu × 931.46 MeV /amu = 7.1257 Mev

In joule:

1.142 × 10⁻¹⁵ kJ

Because 1 MeV = 1.6 × 10⁻¹⁶ Kj

answer; protein;

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current