I need help and the first person who answer correctly gets a BRANLIST​

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?

Does the energy in a solid increase or decrease when changing to a liquid?

How many grams of n2h4 will be consumed by 23 g of n2o4