Can someone please help me figure this out? It is a simple question. Medal to best answer.

Silver has two naturally occurring isotopes. A typical sample consists of 51.84 percent silver-107 (106.9051 amu) and 48.16 percent silver-109 (108.9048 amu). Calculate the average atomic mass of silver.

1.079 x 104 amu
47 amu
107.87 amu
1078 amu

Question

Can someone please help me figure this out? It is a simple question. Medal to best answer.

Silver has two naturally occurring isotopes. A typical sample consists of 51.84 percent silver-107 (106.9051 amu) and 48.16 percent silver-109 (108.9048 amu). Calculate the average atomic mass of silver.
 	
	1.079 x 104 amu
	47 amu
	107.87 amu
	1078 amu

beccab003 · Answer

I did the problem and got 107.87 amu. Is that correct?

anonymous · Answer

Ag-107 = 51.7% 

Ag-109 = 48.3% 

Average would be 107.87 amu