A 255 sample of nitrogen (N 2 ) was collected over water at 21 degrees C at a pressure of 745 mm Hg. Calculate the moles of the gas. Calculate the mass of the gas

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

What’s the question

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

Answer    "a salt" would be the best answerexplanationsalts can be defined as ionic compounds that are neither acids nor bases. nacl is an example of a salt, and its ionic.an enzyme is an organic compound which is covalently bonded, not ionically bonded.acids are generally held together by covalent bondsan element does not need any bonds to exist