How many moles of ammonium chloride could be found in 100g of water at 70 degrees celsius?

That depends upon the solubility and how much you dissolved. :-). Do you have the solubility in a table. I don't have that.

To determine the number of moles of ammonium chloride in 100g of water at 70 degrees Celsius, we need to know the concentration of ammonium chloride in the solution. Once we have the concentration, we can calculate the number of moles using the formula:

moles = mass / molar mass

To find the concentration of ammonium chloride, we need additional information such as the amount of ammonium chloride dissolved in the water or the percentage of ammonium chloride solution.

Please provide more details so that we can accurately calculate the number of moles of ammonium chloride in the solution.