The balanced half reactions are
4 Fe2+ ====> 4 Fe3+ + 4 e-
<span>MnO42- + 8 H+ + 4 e- ===> Mn2+ + 4 H2O
The net ionic equation is
4 Fe2+ + </span>MnO42- + 8 H+ ===> 4 Fe3+ + Mn2+ + 4 H2O<span />
Mixing water and sugar is a physical change. A physical change is just a change in the form of the substance, whereas a chemical change is when the substance itself changes… chemically. An easy way to figure out which is which is trying to "undo" the change. If it can be undone, it is physical.
Answer: 3500cm-1
Explanation: The -OH bond absorbs IR and vibrates at a characteristic and many times distinctive wave number of 3500cm-1. The -C=O would vibrate at 1700cm-1 though not clearly because -C-O bond typically vibrates around this point
Answer:
Melting and evaporation both represent changes in matter that involve behavior at the molecular level.
Assume <span>the following: </span><span>Mass defect = 3.2008 x 10-27 kilograms</span><span>
</span><span>Use E = mc2, with c = 3 x 108 m/s
</span>
The nuclear binding energy for uranium-238 in joules is 2.8807 x 10-8 joules.
