Multiple Choice
Given a sample containing 3.72 g of phosphorus (P) and 21.28 g of chlorine (Cl), what is the empirical formula of the compound formed?
33
views
3. Chemical Reactions
Empirical Formula
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following represents the empirical formula for the compound a3b9?
A
a9b27
B
ab3
C
ab2
D
a3b9
Verified step by step guidance1
Understand that the empirical formula represents the simplest whole-number ratio of atoms in a compound.
Given the formula a3b9, identify the subscripts for elements a and b, which are 3 and 9 respectively.
Find the greatest common divisor (GCD) of the subscripts 3 and 9, which is 3.
Divide each subscript by the GCD to simplify the ratio: \( \frac{3}{3} = 1 \) for a and \( \frac{9}{3} = 3 \) for b.
Write the empirical formula using the simplified subscripts: \( \mathrm{a} \mathrm{b}_3 \).
2:26mWatch next
Master Empirical vs Molecular Formula with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Empirical Formula practice set
Problem sets built by lead tutorsExpert video explanations