For the reaction given below, how many moles of nitrogen monoxide will form if we start with 2.0 moles of oxygen? 4 NH3 + 5 O2 → 4 NO + 6 H2O

5.0 mol

2.5 mol

2.0 mol

4.0 mol

1.6 mol

Why is nh3 classified as a polar molecule

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)