The answers are A A D. can you show how you got your answers? 16) Determine the

Question

The answers are A A D. can you show how you got your answers?

16) Determine the molecular formula of a compound that has a molar mass of 183.2 g/mol and an 16) - empirical formula of C2H502. E) C3H7O3 17) Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form 17) carbon monoxide gas and water vapor. A) 2 C2H6 (g)+502 (g) - 4 CO (g)+6 H2O (g) B) 2 CH3 (g)+5O(g)- 2CO (g)+3 H2O (g) C) C2H6 (g)+7O (g) -2 CO2 (g)+3 H20 (g) D) 2 C2H6 (g)+7O2 (g) 4 CO2 (g)+6 H2O (g) E)C2H6 (g) + 5 0(g)-2CO(g) + 3H20 (g) 18) 18) Calculate the mass percent composition of sulfur in Al2(SO4)3 B) 35.97 % A) 42.73 % C)9.372 % D) 28.12 % E) 21.38 %

Explanation / Answer

Q16

MW of empriical = 2C + 5H + 2O = 2*12+ 5*1 + 2*16 = 61

ratio --> 183/61 = 3x

then

3x(empirical) = 3xC2H5O2 = C6H15O6

Q17

ethane + O2 = CO + H2O

balance

C2H6 + O2 = CO + H2O

C2H6 + O2 = 2CO + H2O

C2H6 + O2 = 2CO + 3H2O

balance O

C2H6 + 5/2O2 = 2CO + 3H2O

multiply by 2

2C2H6 + 5O2 = 4CO + 6H2O

choose A

Q18

MW of S = 32

MW of Al2(SO4)3= 342.15

then

total S = 3S; 3*32:

mass of S% = 3*(32)/ 342.15 * 100 = 28.12 %

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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