Answer:
There are 6.022x10^23 molecules
KI-starch paper allows the detection of strong oxidizers such as nitrite. It is used here to control diazotization of 4-nitroaniline. Nitrite oxidizes potassium iodide in order to form elemental iodine which reacts with starch to a blue-violet complex. With KI-starch paper, enough sodium nitrite is added to produce nitrous acid, which <span>then will react with 4-nitroaniline to form a diazonium salt.</span>
Its okay my friend. you dont need to over stress it.
Answer: A dune is a mound of sand formed by the wind, usually along the beach or in a desert. Dunes can also be formed by strong currents beneath the water.
We substitute the enthalpies for the reactants in the equation:
101 + 142.3 = ΔH + 247.5
ΔH = -4.2 kJ/mol