Author Question: How many protons does the Br- ion possess? A) 34 B) 36 C) 6 D) 8 E) ... (Read 50 times)

faduma · **on:** Aug 27, 2018

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?

TDubDCFL · **Reply #1 on:** Aug 27, 2018

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.