Question

Chromium forms two bromides, one that is 17.82% chromium by mass and another that is 24.55% chromium. In the first compound, what is the mass of chromium per 1 gram of bromide? In the second compound, what is the mass of chromium per 1 gram of bromide? What is the ratio of mass of chromium in the two samples per gram of bromide7 (Use the ratio of the larger mass to the smaller mass.)

Answer 1

1.378 to 4 sig figs

Step-by-step explanation:

Bromides 1 2

% Cr 17.82 24.55

Mass Cr (g) 0.1782 0.2455 (in 1 gram) [Multiply % Cr by 1 gram]

Ratio (2/1) (0. 2455)/(0.1782) = 1.378 to 4 sig figs