Hello! Can somebody please help me solve/understand these with work? Thank you so much!

When 2 moles of NH3 is produced 46 kJ of energy is released. How much energy would be released when 8 moles of NH3 is produced?

How many grams of ammonia (NH3) can be made from 21.0 grams of nitrogen gas (N2)?

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

What is the most important factor in determining climates.