The answer may be (A) hope help!❤️
<u>Answer:</u> The energy released in the decay process is 
<u>Explanation:</u>
The equation for the alpha decay of Ra-226 follows:

To calculate the mass defect, we use the equation:
Mass defect = Sum of mass of product - Sum of mass of reactant

We know that:

Putting values in above equation, we get:

(Conversion factor: 1 kg = 1000 g )
To calculate the energy released, we use Einstein equation, which is:



Hence, the energy released in the decay process is 
Explanation:
Visible light is the range of electromagnetic waves that humans can see. Anything that glows or gives off light makes waves of what we call visible light. The sun, light bulbs, candles and fire are all things that people automatically think of when it comes to light, but visible light comes from many sources and in many colors. Some other sources of visible light include: television and computer screens, glow sticks, and fireworks
"Describing how copper changes color in chlorine" is the answer I think is right. Hope this helped!
<span>=1330 ft^2 x (1m^2/3.25 ft^2)
=124 m^2
</span>