6. What is the molecular formula for a compound that is 85.6% carbon and 14.4% hydrogen if the molecular mass is 84.162 grams? (Hint: Calculate the empirical formula first.) 7. What is the molecular formula for a compound that is 39.2% phosphorus and 60.8% oxygen if the molecular mass is 157.942 grams? (Hint: Calculate the empirical formula first.)

6. What is the molecular formula for a compound that is 85.6% carbon and 14.4% hydrogen if the molecular mass is 84.162 grams? (Hint: Calculate the empirical formula first.) 7. What is the molecular formula for a compound that is 39.2% phosphorus and 60.8% oxygen if the molecular mass is 157.942 grams? (Hint: Calculate the empirical formula first.)

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...

See similar textbooks

Similar questions

22.00 grams of an organic compound containing only carbon, hydrogen, and oxygen is combusted in an excess of air. 46.44 grams of carbon dioxide and 7.92 grams of water are produced. What is the empirical formula of the compound?
A compound is 25.0% carbon, 8.4% hydrogen and 66.6% sulfur by mass. Put symbols in order of CHS. Enter the formula without subscripting the numbers, add no spaces. For example: C4H402. Its empirical formula is
A molecule has an empirical formula of CH 2O and a molar mass of 179.9 g/mol. What is the molecular formula of this molecule?
Is the formula compound for B the same as for either compound A or C? What’s the molar mass and identity for element X? You are given another sample of compound B, but now it has 1.50moles of copper in it. What’s the total mass of this sample?
a) Determine the empirical formula of a compound that contains sulfur and oxygen. It has been determined that 59.95% of the mass of this compound is oxygen. [ b) The molar mass of the compound is determined to be 240.189 g/mol. What is the molecular formula of the compound?
A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and 0.440 g of hydrogen. A) What is the simplest formula of the compound (Write C first and then H)? You won't be able to make the numbers a subscript. For instance, for MgCl2 enter MgCl2. B) The molar mass of the compound was found to be 42.08 g/mol. What is the molecular formula of the compound? You won't be able to make the numbers a subscript. For instance, for MgCl2 enter MgCl2.
43. One of the ingredients in the Native American stomachache remedy derived from common chokecherry is caffeic acid which is comprised of carbon, hydrogen, and oxygen only. Combustion of 1.00  102 mg of caffeic acid yielded 220 mg of CO2 and 40.3 mg of H2O. Determine the empirical formula of caffeic acid. You may check your answer by looking up the answer, but do not use the formula to solve the problem.
Determine the empirical formula of ascorbic acid if it is composed of 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen. If the molar mass of the acid is 176.14 g/mole, calculate the molecular formula of the acid. Could you please show me the process of how to set it up.
Be sure to answer all parts. Pheromones are a special type of compound secreted by the females of many insect species to attract the males for mating. One pheromone has the molecular formula C19H350. Normally, the amount of this molecules does this quantity pheromone secreted by a female insect is about 1.2 x 10 12 g. How many contain? x 10 molecules Enter your answer in scientific notation.
A compound containing chromium, Cr; chlorine, Cl; and oxygen, O, is analyzed and found to be 33.6% chromium, 45.8% chlorine, and 20.6% oxygen by mass. What is the empirical formula of the compound? The molar mass of chromium, Cr, is 51.996 gmol; the molar mass of chlorine, Cl, is 35.45 gmol; and the molar mass of oxygen, O, is 15.999 gmol.