1. Calculate the pH and pOH of an 0.5 mol/L NH3∙Н2О (aqueous solution). Take in to account that NH3∙Н2О is a weak electrolyte with Кb(NH3∙Н2О) = 1.8·10-5 mol/L.

219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.

In any energy conversion, some of the energy is lost to the environment as question 5 options: electrical energy potential energy sound energy thermal energy

What overall charge must all compounds have