Answer:
- <em>c. The reaction is spontaneous at all temperatures.</em>
Explanation:
The spontaneity of a reaction can be determined by the thermodynamic property named Gibb's free energy or simply free energy (G).
The change in the free energy of a system is defined as the difference between the increase in enthalpy (ΔH) and the product of the temperature (T) times the increase in entropy (ΔS):
The sign of ΔG tells if a reaction is spontaneous according to this:
- ΔG < 0, the reaction is spontaneous.
- ΔG = 0, the reaction is in equilibrium.
- ΔG > 0, the reaction is not spontaneous.
The question states that a reaction is exothermic, and its entropy change is positive. That means:
- Exhotermic: ΔH < 0
- Positive entropy change: ΔS > 0
Remember that the temperature is stated in absolute scale, so T is always positive.
Hence, ΔG = ΔH - T ΔS = (negative) - T (positive) = (negative) + (negative) = negative.
<u>Conclusion</u>: since ΔG is negative, regardless the temperature, you conclude that<em><u> the reaction is spontaneous at all temperatures, which is the option c.</u></em>
Answer:
endothermic
Explanation:
Heat is added to make the process possible.
I think the correct answer would be <span>charged and insulated wire wrapped around a piece of iron. The charge in the wire would make magnetic fields through the aid of the magnetic properties of iron. Hope this helps. Have a nice day.</span>
Curium (Cm, 96) – Pierre and Marie Curie einsteinium (Es, 99) – Albert Einsteinfermium (Fm, 100) – Enrico Fermigallium (Ga, 31) – both named after Gallia (Latin for France) and its discoverer, Lecoq de Boisbaudran (le coq, the French word for 'rooster' translates to gallus in Latin)hahnium (105) – Otto Hahn (Dubnium, named for Dubna in Russia, is the IUPAC-accepted name for element 105)lawrencium (Lr, 103) – Ernest Lawrencemeitnerium (Mt, 109) – Lise Meitner<span>mendelevium (Md, 101) – Dmitri Mende</span>
<span>obelium (No, 102) – Alfred Nobel<span>roentgenium (Rg, 111) – Wilhelm Roentgen (formerly Ununumium)</span><span>rutherfordium (Rf, 104) – Ernest Rutherford </span><span>seaborgium (Sg, 106) – Glenn T. Seaborg</span></span>
Answer:
the D
Explanation:
The metal ice-cube tray has a higher conductivity
