The combustion of 4.000g of a compound that contains only C, H, N and Br yields 3.826g of CO2 and 2.087g of H2O. Another sample of the compound with a mass of 3. 111g is found to contain 1.803 grams of Br. What is the empirical formula of the compound?

Is 343 in the sequence -5, -2, 1, 4, 7

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost

Total number of electrons that can occupy the d sub level