the percent of hydrogen by mass in HNO3 is 1.600%
Energy added is relative to the mass gained by the proton multiplied by the speed of light squared. In other words, a lot of energy is converted into a relatively small amount of mass<span>.</span>
Work = Force * distance (aka Weight * height lifted)
Work to lift 1 brick:
W = mgh = (4 kg)(9.8 m/s²)(15 m) = 588 J
Work to lift 520 bricks:
W = 520(588 J) = 305,760 J
