A compound is found to contain 10.37 % phosphorus , 4.689 % nitrogen , and 84.95 % iodine by mass. To answer the question, enter the elements in the order presented above. QUESTION 1: The empirical formula for this compound is QUESTION 2: The molar mass for this compound is 298.8 g/mol. The molecular formula for this compound is

A 68 g sample of a compound used as a dry cleaning fluid is found to contain 10.80 g carbon, 1.36 g hydrogen and 47.84 g chlorine.  What is the subscript of hydrogen in the empirical formula for the compound?

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How many moles of atoms are in each elemental sample? 1) Express your answer using two significant figures.  5.7×1024 Pb atoms 2) Express your answer using three significant figures.  2.14×1022 He atoms 3) 1.98 g Zn   4) 2.29×10−2 g Li   5) What is the mass in grams of each elemental sample? 6.69 mol W   6) How many molecules are in each sample? Express your answer using two significant figures.  2.3 g H2O

A compound composed of Nitrogen, Carbon, and Hydrogen has the following composition by mass: 60.0 % C, 12.0 % H. Determine the empirical formula of this compound.   ii. If this compound has a molar mass of 300 g/mol, what is its molecular formula?

2. A compound composed of N and O has 2.5 moles of O for every 1 mole of N. Write the empirical formula for this compound. Use proper notation to denote this is an empirical formula and not a molecular formula.

v Question Completion Status: QUESTION 8 *Show all vour work on a separate sheet of paper for the following problem. Full credit is based upon the correct setup as show as well as the correct answer. You can earn partial credit for this problem. What is the molecular formula of estrogen, which has a molar mass of 272.38 g/mol and an empirical formula of CgH120? (enter the answer as done in the question above) PERIODIC TABLE OF THE ELEMENTS IA 13 14 15 III A IVA VA 7. 2 16 1.0079 IIA VIA 4 6. Li Be C 6.941 9.0122 10.811 12.011 14.007 15.999 8. 9. 10 11 12 13 14 15 16 VIII B 5 6 VI B 12 II B 3. 3 4 11 Al Si Mg 24.305 Na 22.990 III B IV B VB VIIB IB 26.982 28.086 30.974 32.0 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 3- 4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As 39.098 40.078 44.956 47 867 50.942 $1.996 54.938 55.845 S8 933 SK.693 63.546 65.39 69.723 72.61 74,922 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 Save and Submit to save and submit. Click Save All Answers to save all…

When 5.095 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 15.61 grams of CO₂ and 7.457 grams of H₂O were produced. In a separate experiment, the molar mass of the compound was found to be 86.18 g/mol. Determine the empirical formula and the molecular formula of the hydrocarbon. Enter the elements in the order presented in the question. empirical formula molecular formula = = Previous Next