If you have 66.6 g nh3 how many grams of f2 are required for a complete reaction

The correct answer is 186.1gF2

Explanation:

Hello!

Let's solve this!

The reaction is:

2NH3 + 5F2 ---> N2F4 + 6HF

We have as data:

NH3 mass = 34g / mol

mass F2 = 95g / mol

mass NH3 = 66.6g

We don't use moles because we need mass in grams.

We calculate:

mass F2 = 66.6g * (95g / mol / 34g / mol) = 186.1gF2

The correct answer is 186.1gF2

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"