Pls help ASAP this is due tmrw thank you

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 blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Once similarity and one difference between a mixture of elements and a mixture of compounds