5,0/- (aq) + 2H+ (aq) + H. O(l) + SO, (g) + S(s)
4. Design an experiment between 1.0 mol dm sodium thiosulfate
and 1.0 mol dm hydrochloric acid to achieve a color change
from colorless to yellow in 60 seconds exactly. You are permitted
to change any variable to achieve this outcome. You could use the
following points for guidance. [10]

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

Gravitational potential energy is related to

Benzonitrile (c6h5cn) is reduced to two different products depending on the reducing agent used. treatment with lithium aluminum hydride followed by water forms k, which has a molecular ion in its mass spectrum at 107 and the following ir absorptions: 3373, 3290, 3062, 2920, and 1600 cm-1. treatment with a milder reducing agent forms l, which has a molecular ion in its mass spectrum at 106 and the following ir absorptions: 3086, 2850, 2820, 2736, 1703, and 1600 cm-1. l shows fragments in its mass spectrum at m/z = 105 and 77. propose structures for k and l and choose an explanation for how this could be concluded.