# Problem: A chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each compound.2.677 g Ba, 3.115 g Br

###### FREE Expert Solution

Step 1: Calculate the %Mass of Ba and Br

We need to determine the mass percent of Ba and Br in the compound. Recall that mass percent is given by:

First, we calculate the total mass

Total mass = 5.792 g

The mass percent of Ba is

%Ba = 46.22%

The mass percent of Br is

% Br = 53.78%

Step 2: Calculate the moles of Ba and Br

Assuming we have 100 g of the compound, this means we have 46.22 g Ba and 53.78 g Br. Now, we need to get the moles of each element in the compound. The atomic masses are 137.33 g/mol Ba and 79.90 g/mol Br.

The moles of Ba in the compound is:

moles of Ba = 0.3366 mol Ba

The moles of Br in the compound is:

moles of Br = 0.6731 mol Br

Step 3: Determine the lowest whole number ratio of Ba and Br to get the empirical formula ###### Problem Details

A chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each compound.

2.677 g Ba, 3.115 g Br