The right answer for the question that is being asked and shown above is that: "b. positive or negative charge" An isotope undergoes radioactive decay by emitting radiation that has no mass. The other characteristic does the radiation have is that b. positive or negative charge
The answer is D. The rice cooker / pot.
hope this helps !
Answer:
<em>Hydrogen bonding</em>
Explanation:
<em>Acetone major species present when dissolved in water is called hydrogen boding. these occurs when, the acetone and water as the oxygen of acetone's cabonyl bond with the O-H of water.</em>
<em>Such presence of hydrogen bonding would helps the ability of molecules of two types to be miscible together</em>
69. The student's skin was obviously warmer than the initial temperature of the bracelet. According to the second law of thermodynamics, heat transfers from a higher temperature to a lower temperature hence heat transfers from the student's skin to the bracelet warming up the bracelet.
70. moles of copper=mass of copper/molar mass of copper
=30.1g/(63.55g/mol)= 0.4736 moles Cu
71. Delta H( heat released) = mCp(deltaT) = 30.1g(0.385 J/gK)(33-19)K = 162.23J
72. Copper is chemically less active than iron.
