Solution Found!
Calculating Formula Masses: From Barium Bromide to Hydrobromic Acid
Chapter 5, Problem 98P(choose chapter or problem)
For each compound, list the correct formula and calculate the formula mass.
(a) barium bromide
(b) dinitrogen trioxide
(c) copper(I) sulfate
(d) hydrobromic acid
Questions & Answers
QUESTION:
For each compound, list the correct formula and calculate the formula mass.
(a) barium bromide
(b) dinitrogen trioxide
(c) copper(I) sulfate
(d) hydrobromic acid
ANSWER:
Step 1 of 2
Here, we are going to calculate the formula mass.
Formula mass is the average mass of the molecule of a compound.
Formula mass of a molecule can be calculated by using the following formula.
Formula mass = (no of atoms of the element ) x (atomic mass of 1st element) + (no of atoms of the element ) x (atomic mass of 2nd element) +...
(a) barium bromide
The chemical formula of the compound is \(\mathrm{BaBr}_{2}\).
Formula mass
\(\begin{array}{l} =1 \times(\text { atomic mass of } \mathrm{Ba})+2 \times(\text { atomic mass of } \mathrm{Br}) \\ =1 \times 137.33 \mathrm{amu}+2 \times 79.904 \mathrm{amu} \\ =137.33+159.808 \mathrm{amu} \\ =297.138 \mathrm{amu} \end{array}\)
The formula mass of barium bromide is 297.138 amu.
Watch The Answer!
Calculating Formula Masses: From Barium Bromide to Hydrobromic Acid
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Understand the process of calculating formula masses for various compounds. This video breaks down the atomic masses for elements in barium bromide, dinitrogen trioxide, copper(I) sulfate, and hydrobromic acid. Master the method of summing up the masses considering atom count in each formula.