.0772g of an unknown, solid bronze, is dissolved in 20 mL 25% HNO3 on a hot plate. After 20 min the sample is removed and 25-40 mL of nanopure water is added to the sample. After the sample has cooled to room temperature it is transferred to a 100mL volumetric flask and diluted to mark. 5 mL of this sample is transfer into another 100 mL volumetric flask. 20 mL of 25% HNO3 is added and then the solution is diluted to mark. It is ran through an AA and the concentration has be found as 0.968254 ppm.
Calculate the weight percent of the zinc in the original solid bronze sample.

Question

.0772g of an unknown, solid bronze, is dissolved in 20 mL 25% HNO3 on a hot plate. After 20 min the sample is removed and 25-40 mL of nanopure water is added to the sample. After the sample has cooled to room temperature it is transferred to a 100mL volumetric flask and diluted to mark. 5 mL of this sample is transfer into another 100 mL volumetric flask. 20 mL of 25% HNO3 is added and then the solution is diluted to mark. It is ran through an AA and the concentration has be found as 0.968254 ppm.
Calculate the weight percent of the zinc in the original solid bronze sample.