What mass of oxygen atoms contains the same number of moles as 112 g of sulphur atoms? [R. A.M: 0 = 16. S = 32]
0.56g
5.6g
56.0g
560g

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

The reaction q+r2=r2q is found to be first order in r2 and

Classify this reaction: 2al+n2-> aln.