You just need the energy of turning of water in to steam. Water is a little funny because once water gets to 100 degrees C, it stops changing in temperature whilst it all turns to steam. The amount of energy required to turn 1 gram of water into steam is 2257 Joules. We call this the latent heat of vaporisation. So to turn 74.6 grams of water to steam, you would need:
2257J/gram x 74.6g = 168,372.2 J = 168.4 kJ
(<span></span><em>latent heat of vaporisation: 2257 J/gram</em>)
Answer:
gamma
Explanation:
x rays are often used in hospitals
gamma rays :
are highly penetrating
have highly energetic ionizing radiation
frequency is higher
wavelengths are shorter rays
can attack DNA and break the strands of that essential biological molecule
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The answer is true
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