Question

1- What is the mass of one mole of each of the following
Bromine (B2)

2- How many moles are there in each of the following?
76.8g of sulfur dioxide (SO2)

3- How much would each of the following weigh in grams?
1.6 moles of ammonia (NH3)
(answer 3 I will put brainest)

Answer 1

Answer:

159.808 g/mol

The reaction is depicted as:

SO

2

+

2

1

O

2

⟷SO

3

We have initially:

SO

2

=5 mol

O

2

=5 mol

SO

3

=0 mol

At equilibrium :

60% SO

2

is used up-

SO

2

= 5−5(0.6) = 2 mol

O

2

=5−5(0.3) = 3.5 mol

SO

3

=5(0.6)=3 mol

Therefore, total moles of SO

2

, O

2

and SO

3

at equilibrium =8.5 mol

NH

3

Molecular weight = 14+3×1

=17

No. of moles =

molecularweight

gramweight

=

17

68

(given)

=4mol