Ammonia gas combines with excess oxygen gas to produce Nitric oxide and water. If 256 kJ of energy were released in such a reaction, how many grams of ammonia gas were reacted? 4NH3 + 5O2 —> 4NO + 6H2O AH=-1170 kJ

first one is the correct answer

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

the answer is option a.