Question

N2​(g)+3H2​(g)→2NH3​(g):    △f H⊖=−86.4 kJ mol−1
What is the standard enthalpy of formation of NH3​ gas?​

Answer 1

$\huge\mathcal\blue{\mathbb{\boxed{ANSWER}}}$

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.

Answer 2

ANSWER

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.