The air in Great Falls, Montana has a temperature of 5°C and a relative humidity of 50 percent. On the same afternoon, the air in Palm Springs, California has a temperature of 25°C and a relative humidity of 50 percent. What can be said about the amount of vapor in the air at these two cities? Great Falls and Palm Springs will have the same vapor content. Great Falls will have a higher vapor content than Palm Springs. Palm Springs will have a higher vapor content than Great Falls.

16.18 g HBr

Explanation:

We are given;

0.100 moles of Bromine

We need to determine the amount of HBr produced when bromine reacts with hydrogen;

First, we write the equation for the reaction;

H₂(g) + Br₂(l) → 2HBr

From the equation;

1 mole of bromine reacts with hydrogen to form 2 moles of HBr

Therefore;

Moles of HBr = 2 × moles of Bromine

                       = 2 × 0.100 moles

                        = 0.200 moles

Secondly, we determine the mass of HBr produced

Mass = Number of moles × molar mass

Molar mass of HBr = 80.91 g/mol

Thus;

Mass of HBr = 0.200 moles × 80.91 g/mol

                     = 16.182 g

                      = 16.18 g

Therefore, the mass of HBr is 16.18 g