Which notation is commonly used on force diagrams to show forces acting on an object?

In 2002, the rare earth elements mine in mountain pass, california was closed because

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.

Convert .347 kilometers to miles show your work