(Solved): A student dissolves 12.1 g of sodium hydroxide ( N3OH) in 200, g of water in a well-insulated open ...

A student dissolves 12.1 g of sodium hydroxide ( N3OH) in 200, $\mathrm{g}$ of water in a well-insulated open cup. He then observes the temperature of the water rise from $21.0^{?}\mathrm{C}$ to $36.9^{?}\mathrm{C}$ over the course of 7.9 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: $\mathrm{NaOH}(s)?{\mathrm{Na}}^{+}(aq)+{\mathrm{OH}}^{?}(aq)$ You can make any reasonable assumptions abcut the physical properties of the solution. Be sure answers you calculate using meosured data are rounded to the correct number of significant digits. Note for advanced students: 1t's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the knewn and published values for this reaction. This energy diagram shows the allowed energy levels of an electron in a certain atom or molecule: Use this diagram to complete the table below.