A binary compound created by the reaction of an un-known element E and hydrogen contains 91.27% E and 8.73% H by mass. If the formula of the compound is E3H8, calculate the atomic mass of E.
Answer to relevant QuestionsAn ionic compound MX3 is prepared according to the following unbalanced chemical equation: M + X2 → MX3 A 0.105g sample of X2 contains 8.92 × 1020 molecules. The compound MX3 consists of 54.47% X by mass. What are the ...The mass spectrum of bromine (Br2) consists of three peaks with the following relative sizes: Mass (amu) Relative Size 157.84.................................................... ...In using a mass spectrometer, a chemist sees a peak at a mass of 30.0106. Of the choices 12C2 1H6, 12C1H2 16O, and 14N16O, which is responsible for this peak? Pertinent masses are 1H, 1.007825; 16O, 15.994915; and 14N, ...Vitamin A has a molar mass of 286.4 g and has a general molecular formula of CxHyE, where E is an un-known element. If vitamin A is 83.86% C and 10.56% H by mass, what is the molecular formula of vitamin A? When M2S3(s) is heated in air, it is converted to MO2(s). A 4.000- g sample of M2S3(s) shows a decrease in mass of 0.277 g when it is heated in air. What is the average atomic mass of M?
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