4 Analysis of a hydrocarbon shows it to consist of 17.9 grams of carbon and 4.5

Question

4 Analysis of a hydrocarbon shows it to consist of 17.9 grams of carbon and 4.5 grams of hydrogen. Determine the empirical formula of the compou nd 5. What percentage by mass of borax. Na B,05(OH), 8 H 0, is boron? What is the percent sodium? 6. Cocaine is 67304 H 24 nd 462 N. Demonstrate the method of determining the empirical formula of cocaine using this information. Gasi% ? 688% H 4.e2% N 21. 10% O How many gams of pur uraniom can deoecialy e xtraced foma 00 g sample of pitchblende, which is 92.0% UO

Explanation / Answer

4) 17.9 g carbon 4.5 g Hydrogen

   diving the weight by their molecular mass

   17.9 / 12 C 4.5/1 H
   1.49 C 4.5 H
diving both values with the lowest value

1 C 4.5/1.49 H
1 C. 3 H
CH3 is the empirical formula

** Answering only first question due to policy and time constraints, please help us help you by posting the question individually/seperately. Sorry to dissapoint you.

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.