4.29 moles of NH3 -->? grams

How many grams of NH3 can be produced from 4.29 mol of N2 and excess H2. Please explain how you got the answer.

This is a stoichiometry problem, and the first thing you need is a balanced equation. I generally write the equation, balance it, then write the quantities (those given and asked for ( ?) ) below the substances, and write the the molar masses (from the periodic table) for any substances that must be converted between mass and mol.

   17.02 g/mol        (molar masses)

      N2         +      3 H2  →2 NH3             (balanced equation)

   4.29 mol             xs               ? g               (quantities given, asked)

To do stoichiometry, you will use the mol ratio of two substances in the balanced equation. We can only relate the mol of reactants to the mol of any other substance in the equation. We measure amounts of substances by mass (g) in the lab, however, so amounts are often given or asked for by mass, rather than mol. In this problem, you will have to convert mol NH3 to g NH3.

2 steps: 1)  Use the mol ratio from the balanced eq'n to calculate mol NH3 produced (stoichiometry)

           2)  Convert the mol NH3 to mass NH3 (in g) using dimensional analysis

1) The mol ratio from the balanced eq'n that you need is mol substance you are asked about

over the mol substance you are given

From the balanced eq'n: 2 mol NH3/1 mol N2

4.29 mol N2   x  2 mol NH3/1 mol N2  =  8.58 mol NH3    (stoichiometry)

2) 8.58 mol NH3 x   17.02 g NH3/1 mol NH3    =  146 g NH3      (conversion, mol to mass)

Please brainilist 1 more i ranlk up

Explanation:

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.