Questions and answers by

pho le

Questions (3)

A sample of air contains 14.5 µg/m3of beryllium dust. How many atoms of beryllium are present in a room with dimensions of 11
1. 0 answers
2. 522 views
14 carat gold has a purity of 58.3%. Howmany moles of gold are in 137 grams of 14 carat gold? Answer in units of moles.
1. 1 answer
2. 1,425 views
How many atoms of mercury are present in3.2 cubic centimeters of liquid mercury? The density of mercury is 13.55 g/cc.
1. 2 answers
2. 737 views