Need help. Please show how you got your answers. Thanks QUESTION 18An analysis of a compound is performed. Percent by mass isC 40.0% H 6.7% O 53.3%The empirical formula of the compound isO A. CH20B. CHO2C.C2HOD. C2HO2O E. CAHO3QUESTION 19_C2H4 +_ 02 = _CO2+_H2o%3DWhen the above equation is correctly balanced, the sum of the coefficients isO A.8 OB.5 OC7 OD 6 QUESTION 20When an aluminum atom forms an Al3* ion, the atomO A. gains three protonsO B. gains two electrons and loses one protonO C. loses three electronsO D. gains three electronsO E loses three protons

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Science

Chemistry

The empirical formula of the compound is

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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