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Author Question: How many protons does the Br- ion possess? A) 34 B) 36 C) 6 D) 8 E) ... (Read 40 times)

faduma

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How many protons does the Br- ion possess?
 
  A) 34
  B) 36
  C) 6
  D) 8
  E) 35

Question 2

How many molecules of XeF6 are formed from 12.9 L of F2 (at 298 K and 2.60 atm) according to the following reaction? Assume that there is excess Xe.
 
  Xe(g) + 3 F2(g)  XeF6(g)
 
  A) 1.21  1023 molecules XeF6
  B) 8.25  1023 molecules XeF6
  C) 2.75  1023 molecules XeF6
  D) 7.29  1023 molecules XeF6
  E) 1.37  1023 molecules XeF6

Question 3

Describe the difference between a molecular formula and an empirical formula. Give an example.
 
  What will be an ideal response?



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TDubDCFL

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Answer to Question 1

E

Answer to Question 2

C

Answer to Question 3

A molecular formula is the exact number of each type of atom necessary to build a specific molecule. An empirical formula is simply the smallest whole number ratio between atoms in a compound. For example, C2H4 is the molecular formula for ethene. The empirical formula for ethene is CH2, the smallest whole number ratio between the atoms.



faduma

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TDubDCFL

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